20002510

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:361

約数の個数: 48

約数和(自身を含む): 40372416

約数和(自身を除く): 20369906

約数列:

[1, 2, 5, 10, 11, 22, 55, 61, 110, 121, 122, 242, 271, 305, 542, 605, 610, 671, 1210, 1342, 1355, 2710, 2981, 3355, 5962, 6710, 7381, 14762, 14905, 16531, 29810, 32791, 33062, 36905, 65582, 73810, 82655, 163955, 165310, 181841, 327910, 363682, 909205, 1818410, 2000251, 4000502, 10001255, 20002510]

約数ペア:

[(1, 20002510), (2, 10001255), (5, 4000502), (10, 2000251), (11, 1818410), (22, 909205), (55, 363682), (61, 327910), (110, 181841), (121, 165310), (122, 163955), (242, 82655), (271, 73810), (305, 65582), (542, 36905), (605, 33062), (610, 32791), (671, 29810), (1210, 16531), (1342, 14905), (1355, 14762), (2710, 7381), (2981, 6710), (3355, 5962)]