257400296

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:570

約数の個数: 64

約数和(自身を含む): 526780800

約数和(自身を除く): 269380504

約数列:

[1, 2, 4, 8, 19, 38, 41, 76, 82, 103, 152, 164, 206, 328, 401, 412, 779, 802, 824, 1558, 1604, 1957, 3116, 3208, 3914, 4223, 6232, 7619, 7828, 8446, 15238, 15656, 16441, 16892, 30476, 32882, 33784, 41303, 60952, 65764, 80237, 82606, 131528, 160474, 165212, 312379, 320948, 330424, 624758, 641896, 784757, 1249516, 1569514, 1693423, 2499032, 3139028, 3386846, 6278056, 6773692, 13547384, 32175037, 64350074, 128700148, 257400296]

約数ペア:

[(1, 257400296), (2, 128700148), (4, 64350074), (8, 32175037), (19, 13547384), (38, 6773692), (41, 6278056), (76, 3386846), (82, 3139028), (103, 2499032), (152, 1693423), (164, 1569514), (206, 1249516), (328, 784757), (401, 641896), (412, 624758), (779, 330424), (802, 320948), (824, 312379), (1558, 165212), (1604, 160474), (1957, 131528), (3116, 82606), (3208, 80237), (3914, 65764), (4223, 60952), (6232, 41303), (7619, 33784), (7828, 32882), (8446, 30476), (15238, 16892), (15656, 16441)]