20983820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:96

約数の個数: 144

約数和(自身を含む): 56306880

約数和(自身を除く): 35323060

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 23, 26, 29, 44, 46, 52, 55, 58, 65, 92, 110, 115, 116, 121, 130, 143, 145, 220, 230, 242, 253, 260, 286, 290, 299, 319, 377, 460, 484, 506, 572, 580, 598, 605, 638, 667, 715, 754, 1012, 1196, 1210, 1265, 1276, 1334, 1430, 1495, 1508, 1573, 1595, 1885, 2420, 2530, 2668, 2783, 2860, 2990, 3146, 3190, 3289, 3335, 3509, 3770, 4147, 5060, 5566, 5980, 6292, 6380, 6578, 6670, 7018, 7337, 7540, 7865, 8294, 8671, 11132, 13156, 13340, 13915, 14036, 14674, 15730, 16445, 16588, 17342, 17545, 20735, 27830, 29348, 31460, 32890, 34684, 35090, 36179, 36685, 41470, 43355, 45617, 55660, 65780, 70180, 72358, 73370, 80707, 82940, 86710, 91234, 95381, 144716, 146740, 161414, 173420, 180895, 182468, 190762, 228085, 322828, 361790, 381524, 403535, 456170, 476905, 723580, 807070, 912340, 953810, 1049191, 1614140, 1907620, 2098382, 4196764, 5245955, 10491910, 20983820]

約数ペア:

[(1, 20983820), (2, 10491910), (4, 5245955), (5, 4196764), (10, 2098382), (11, 1907620), (13, 1614140), (20, 1049191), (22, 953810), (23, 912340), (26, 807070), (29, 723580), (44, 476905), (46, 456170), (52, 403535), (55, 381524), (58, 361790), (65, 322828), (92, 228085), (110, 190762), (115, 182468), (116, 180895), (121, 173420), (130, 161414), (143, 146740), (145, 144716), (220, 95381), (230, 91234), (242, 86710), (253, 82940), (260, 80707), (286, 73370), (290, 72358), (299, 70180), (319, 65780), (377, 55660), (460, 45617), (484, 43355), (506, 41470), (572, 36685), (580, 36179), (598, 35090), (605, 34684), (638, 32890), (667, 31460), (715, 29348), (754, 27830), (1012, 20735), (1196, 17545), (1210, 17342), (1265, 16588), (1276, 16445), (1334, 15730), (1430, 14674), (1495, 14036), (1508, 13915), (1573, 13340), (1595, 13156), (1885, 11132), (2420, 8671), (2530, 8294), (2668, 7865), (2783, 7540), (2860, 7337), (2990, 7018), (3146, 6670), (3190, 6578), (3289, 6380), (3335, 6292), (3509, 5980), (3770, 5566), (4147, 5060)]