87145820

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^2\times {\mathrm{1171}}^1$

素因数の和:1302

約数の個数: 36

約数和(自身を含む): 186214392

約数和(自身を除く): 99068572

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1171, 1220, 2342, 3721, 4684, 5855, 7442, 11710, 14884, 18605, 23420, 37210, 71431, 74420, 142862, 285724, 357155, 714310, 1428620, 4357291, 8714582, 17429164, 21786455, 43572910, 87145820]

約数ペア:

[(1, 87145820), (2, 43572910), (4, 21786455), (5, 17429164), (10, 8714582), (20, 4357291), (61, 1428620), (122, 714310), (244, 357155), (305, 285724), (610, 142862), (1171, 74420), (1220, 71431), (2342, 37210), (3721, 23420), (4684, 18605), (5855, 14884), (7442, 11710)]