20815830

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:123

約数の個数: 192

約数和(自身を含む): 68290560

約数和(自身を除く): 47474730

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 30, 35, 37, 38, 42, 45, 47, 57, 63, 70, 74, 90, 94, 95, 105, 111, 114, 126, 133, 141, 171, 185, 190, 210, 222, 235, 259, 266, 282, 285, 315, 329, 333, 342, 370, 399, 423, 470, 518, 555, 570, 630, 658, 665, 666, 703, 705, 777, 798, 846, 855, 893, 987, 1110, 1197, 1295, 1330, 1406, 1410, 1554, 1645, 1665, 1710, 1739, 1786, 1974, 1995, 2109, 2115, 2331, 2394, 2590, 2679, 2961, 3290, 3330, 3478, 3515, 3885, 3990, 4218, 4230, 4465, 4662, 4921, 4935, 5217, 5358, 5922, 5985, 6251, 6327, 7030, 7770, 8037, 8695, 8930, 9842, 9870, 10434, 10545, 11655, 11970, 12173, 12502, 12654, 13395, 14763, 14805, 15651, 16074, 17390, 18753, 21090, 23310, 24346, 24605, 26085, 26790, 29526, 29610, 31255, 31302, 31635, 33041, 36519, 37506, 40185, 44289, 49210, 52170, 56259, 60865, 62510, 63270, 66082, 73038, 73815, 78255, 80370, 88578, 93765, 99123, 109557, 112518, 121730, 147630, 156510, 165205, 182595, 187530, 198246, 219114, 221445, 231287, 281295, 297369, 330410, 365190, 442890, 462574, 495615, 547785, 562590, 594738, 693861, 991230, 1095570, 1156435, 1387722, 1486845, 2081583, 2312870, 2973690, 3469305, 4163166, 6938610, 10407915, 20815830]

約数ペア:

[(1, 20815830), (2, 10407915), (3, 6938610), (5, 4163166), (6, 3469305), (7, 2973690), (9, 2312870), (10, 2081583), (14, 1486845), (15, 1387722), (18, 1156435), (19, 1095570), (21, 991230), (30, 693861), (35, 594738), (37, 562590), (38, 547785), (42, 495615), (45, 462574), (47, 442890), (57, 365190), (63, 330410), (70, 297369), (74, 281295), (90, 231287), (94, 221445), (95, 219114), (105, 198246), (111, 187530), (114, 182595), (126, 165205), (133, 156510), (141, 147630), (171, 121730), (185, 112518), (190, 109557), (210, 99123), (222, 93765), (235, 88578), (259, 80370), (266, 78255), (282, 73815), (285, 73038), (315, 66082), (329, 63270), (333, 62510), (342, 60865), (370, 56259), (399, 52170), (423, 49210), (470, 44289), (518, 40185), (555, 37506), (570, 36519), (630, 33041), (658, 31635), (665, 31302), (666, 31255), (703, 29610), (705, 29526), (777, 26790), (798, 26085), (846, 24605), (855, 24346), (893, 23310), (987, 21090), (1110, 18753), (1197, 17390), (1295, 16074), (1330, 15651), (1406, 14805), (1410, 14763), (1554, 13395), (1645, 12654), (1665, 12502), (1710, 12173), (1739, 11970), (1786, 11655), (1974, 10545), (1995, 10434), (2109, 9870), (2115, 9842), (2331, 8930), (2394, 8695), (2590, 8037), (2679, 7770), (2961, 7030), (3290, 6327), (3330, 6251), (3478, 5985), (3515, 5922), (3885, 5358), (3990, 5217), (4218, 4935), (4230, 4921), (4465, 4662)]