85721740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{677}}^1$

素因数の和:1186

約数の個数: 48

約数和(自身を含む): 194548032

約数和(自身を除く): 108826292

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 487, 677, 974, 1354, 1948, 2435, 2708, 3385, 4870, 6331, 6770, 8801, 9740, 12662, 13540, 17602, 25324, 31655, 35204, 44005, 63310, 88010, 126620, 176020, 329699, 659398, 1318796, 1648495, 3296990, 4286087, 6593980, 8572174, 17144348, 21430435, 42860870, 85721740]

約数ペア:

[(1, 85721740), (2, 42860870), (4, 21430435), (5, 17144348), (10, 8572174), (13, 6593980), (20, 4286087), (26, 3296990), (52, 1648495), (65, 1318796), (130, 659398), (260, 329699), (487, 176020), (677, 126620), (974, 88010), (1354, 63310), (1948, 44005), (2435, 35204), (2708, 31655), (3385, 25324), (4870, 17602), (6331, 13540), (6770, 12662), (8801, 9740)]