257112980

素因数分解:

$2^2\times 5^1\times {\mathrm{1259}}^1\times {\mathrm{10211}}^1$

素因数の和:11479

約数の個数: 24

約数和(自身を含む): 540419040

約数和(自身を除く): 283306060

約数列:

[1, 2, 4, 5, 10, 20, 1259, 2518, 5036, 6295, 10211, 12590, 20422, 25180, 40844, 51055, 102110, 204220, 12855649, 25711298, 51422596, 64278245, 128556490, 257112980]

約数ペア:

[(1, 257112980), (2, 128556490), (4, 64278245), (5, 51422596), (10, 25711298), (20, 12855649), (1259, 204220), (2518, 102110), (5036, 51055), (6295, 40844), (10211, 25180), (12590, 20422)]