81838890

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:138

約数の個数: 256

約数和(自身を含む): 273715200

約数和(自身を除く): 191876310

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 27, 30, 35, 38, 42, 43, 45, 53, 54, 57, 63, 70, 86, 90, 95, 105, 106, 114, 126, 129, 133, 135, 159, 171, 189, 190, 210, 215, 258, 265, 266, 270, 285, 301, 315, 318, 342, 371, 378, 387, 399, 430, 477, 513, 530, 570, 602, 630, 645, 665, 742, 774, 795, 798, 817, 855, 903, 945, 954, 1007, 1026, 1113, 1161, 1197, 1290, 1330, 1431, 1505, 1590, 1634, 1710, 1806, 1855, 1890, 1935, 1995, 2014, 2226, 2279, 2322, 2385, 2394, 2451, 2565, 2709, 2862, 3010, 3021, 3339, 3591, 3710, 3870, 3990, 4085, 4515, 4558, 4770, 4902, 5035, 5130, 5418, 5565, 5719, 5805, 5985, 6042, 6678, 6837, 7049, 7155, 7182, 7353, 8127, 8170, 9030, 9063, 10017, 10070, 11130, 11395, 11438, 11610, 11970, 12255, 13545, 13674, 14098, 14310, 14706, 15105, 15953, 16254, 16695, 17157, 17955, 18126, 20034, 20511, 21147, 22059, 22790, 24510, 27090, 27189, 28595, 30210, 31906, 33390, 34185, 34314, 35245, 35910, 36765, 40635, 41022, 42294, 43301, 44118, 45315, 47859, 50085, 51471, 54378, 57190, 61533, 63441, 68370, 70490, 73530, 79765, 81270, 85785, 86602, 90630, 95718, 100170, 102555, 102942, 105735, 110295, 123066, 126882, 129903, 135945, 143577, 154413, 159530, 171570, 190323, 205110, 211470, 216505, 220590, 239295, 257355, 259806, 271890, 287154, 303107, 307665, 308826, 317205, 380646, 389709, 430731, 433010, 478590, 514710, 606214, 615330, 634410, 649515, 717885, 772065, 779418, 861462, 909321, 951615, 1169127, 1299030, 1435770, 1515535, 1544130, 1818642, 1903230, 1948545, 2153655, 2338254, 2727963, 3031070, 3897090, 4307310, 4546605, 5455926, 5845635, 8183889, 9093210, 11691270, 13639815, 16367778, 27279630, 40919445, 81838890]

約数ペア:

[(1, 81838890), (2, 40919445), (3, 27279630), (5, 16367778), (6, 13639815), (7, 11691270), (9, 9093210), (10, 8183889), (14, 5845635), (15, 5455926), (18, 4546605), (19, 4307310), (21, 3897090), (27, 3031070), (30, 2727963), (35, 2338254), (38, 2153655), (42, 1948545), (43, 1903230), (45, 1818642), (53, 1544130), (54, 1515535), (57, 1435770), (63, 1299030), (70, 1169127), (86, 951615), (90, 909321), (95, 861462), (105, 779418), (106, 772065), (114, 717885), (126, 649515), (129, 634410), (133, 615330), (135, 606214), (159, 514710), (171, 478590), (189, 433010), (190, 430731), (210, 389709), (215, 380646), (258, 317205), (265, 308826), (266, 307665), (270, 303107), (285, 287154), (301, 271890), (315, 259806), (318, 257355), (342, 239295), (371, 220590), (378, 216505), (387, 211470), (399, 205110), (430, 190323), (477, 171570), (513, 159530), (530, 154413), (570, 143577), (602, 135945), (630, 129903), (645, 126882), (665, 123066), (742, 110295), (774, 105735), (795, 102942), (798, 102555), (817, 100170), (855, 95718), (903, 90630), (945, 86602), (954, 85785), (1007, 81270), (1026, 79765), (1113, 73530), (1161, 70490), (1197, 68370), (1290, 63441), (1330, 61533), (1431, 57190), (1505, 54378), (1590, 51471), (1634, 50085), (1710, 47859), (1806, 45315), (1855, 44118), (1890, 43301), (1935, 42294), (1995, 41022), (2014, 40635), (2226, 36765), (2279, 35910), (2322, 35245), (2385, 34314), (2394, 34185), (2451, 33390), (2565, 31906), (2709, 30210), (2862, 28595), (3010, 27189), (3021, 27090), (3339, 24510), (3591, 22790), (3710, 22059), (3870, 21147), (3990, 20511), (4085, 20034), (4515, 18126), (4558, 17955), (4770, 17157), (4902, 16695), (5035, 16254), (5130, 15953), (5418, 15105), (5565, 14706), (5719, 14310), (5805, 14098), (5985, 13674), (6042, 13545), (6678, 12255), (6837, 11970), (7049, 11610), (7155, 11438), (7182, 11395), (7353, 11130), (8127, 10070), (8170, 10017), (9030, 9063)]