78758020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{271}}^1\times {\mathrm{1321}}^1$

素因数の和:1612

約数の個数: 48

約数和(自身を含む): 181230336

約数和(自身を除く): 102472316

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 271, 542, 1084, 1321, 1355, 2642, 2710, 2981, 5284, 5420, 5962, 6605, 11924, 13210, 14531, 14905, 26420, 29062, 29810, 58124, 59620, 72655, 145310, 290620, 357991, 715982, 1431964, 1789955, 3579910, 3937901, 7159820, 7875802, 15751604, 19689505, 39379010, 78758020]

約数ペア:

[(1, 78758020), (2, 39379010), (4, 19689505), (5, 15751604), (10, 7875802), (11, 7159820), (20, 3937901), (22, 3579910), (44, 1789955), (55, 1431964), (110, 715982), (220, 357991), (271, 290620), (542, 145310), (1084, 72655), (1321, 59620), (1355, 58124), (2642, 29810), (2710, 29062), (2981, 26420), (5284, 14905), (5420, 14531), (5962, 13210), (6605, 11924)]