20541780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1$

素因数の和:183

約数の個数: 216

約数和(自身を含む): 77307048

約数和(自身を除く): 56765268

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 17, 18, 20, 21, 28, 30, 34, 35, 36, 42, 45, 49, 51, 60, 63, 68, 70, 84, 85, 90, 98, 102, 105, 119, 126, 137, 140, 147, 153, 170, 180, 196, 204, 210, 238, 245, 252, 255, 274, 294, 306, 315, 340, 357, 411, 420, 441, 476, 490, 510, 548, 588, 595, 612, 630, 685, 714, 735, 765, 822, 833, 882, 959, 980, 1020, 1071, 1190, 1233, 1260, 1370, 1428, 1470, 1530, 1644, 1666, 1764, 1785, 1918, 2055, 2142, 2205, 2329, 2380, 2466, 2499, 2740, 2877, 2940, 3060, 3332, 3570, 3836, 4110, 4165, 4284, 4410, 4658, 4795, 4932, 4998, 5355, 5754, 6165, 6713, 6987, 7140, 7497, 8220, 8330, 8631, 8820, 9316, 9590, 9996, 10710, 11508, 11645, 12330, 12495, 13426, 13974, 14385, 14994, 16303, 16660, 17262, 19180, 20139, 20961, 21420, 23290, 24660, 24990, 26852, 27948, 28770, 29988, 32606, 33565, 34524, 34935, 37485, 40278, 41922, 43155, 46580, 48909, 49980, 57540, 60417, 65212, 67130, 69870, 74970, 80556, 81515, 83844, 86310, 97818, 100695, 104805, 114121, 120834, 134260, 139740, 146727, 149940, 163030, 172620, 195636, 201390, 209610, 228242, 241668, 244545, 293454, 302085, 326060, 342363, 402780, 419220, 456484, 489090, 570605, 586908, 604170, 684726, 733635, 978180, 1027089, 1141210, 1208340, 1369452, 1467270, 1711815, 2054178, 2282420, 2934540, 3423630, 4108356, 5135445, 6847260, 10270890, 20541780]

約数ペア:

[(1, 20541780), (2, 10270890), (3, 6847260), (4, 5135445), (5, 4108356), (6, 3423630), (7, 2934540), (9, 2282420), (10, 2054178), (12, 1711815), (14, 1467270), (15, 1369452), (17, 1208340), (18, 1141210), (20, 1027089), (21, 978180), (28, 733635), (30, 684726), (34, 604170), (35, 586908), (36, 570605), (42, 489090), (45, 456484), (49, 419220), (51, 402780), (60, 342363), (63, 326060), (68, 302085), (70, 293454), (84, 244545), (85, 241668), (90, 228242), (98, 209610), (102, 201390), (105, 195636), (119, 172620), (126, 163030), (137, 149940), (140, 146727), (147, 139740), (153, 134260), (170, 120834), (180, 114121), (196, 104805), (204, 100695), (210, 97818), (238, 86310), (245, 83844), (252, 81515), (255, 80556), (274, 74970), (294, 69870), (306, 67130), (315, 65212), (340, 60417), (357, 57540), (411, 49980), (420, 48909), (441, 46580), (476, 43155), (490, 41922), (510, 40278), (548, 37485), (588, 34935), (595, 34524), (612, 33565), (630, 32606), (685, 29988), (714, 28770), (735, 27948), (765, 26852), (822, 24990), (833, 24660), (882, 23290), (959, 21420), (980, 20961), (1020, 20139), (1071, 19180), (1190, 17262), (1233, 16660), (1260, 16303), (1370, 14994), (1428, 14385), (1470, 13974), (1530, 13426), (1644, 12495), (1666, 12330), (1764, 11645), (1785, 11508), (1918, 10710), (2055, 9996), (2142, 9590), (2205, 9316), (2329, 8820), (2380, 8631), (2466, 8330), (2499, 8220), (2740, 7497), (2877, 7140), (2940, 6987), (3060, 6713), (3332, 6165), (3570, 5754), (3836, 5355), (4110, 4998), (4165, 4932), (4284, 4795), (4410, 4658)]