394492020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{505759}}^1$

素因数の和:505784

約数の個数: 48

約数和(自身を含む): 1189547520

約数和(自身を除く): 795055500

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 505759, 1011518, 1517277, 2023036, 2528795, 3034554, 5057590, 6069108, 6574867, 7586385, 10115180, 13149734, 15172770, 19724601, 26299468, 30345540, 32874335, 39449202, 65748670, 78898404, 98623005, 131497340, 197246010, 394492020]

約数ペア:

[(1, 394492020), (2, 197246010), (3, 131497340), (4, 98623005), (5, 78898404), (6, 65748670), (10, 39449202), (12, 32874335), (13, 30345540), (15, 26299468), (20, 19724601), (26, 15172770), (30, 13149734), (39, 10115180), (52, 7586385), (60, 6574867), (65, 6069108), (78, 5057590), (130, 3034554), (156, 2528795), (195, 2023036), (260, 1517277), (390, 1011518), (780, 505759)]