256394040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{305231}}^1$

素因数の和:305252

約数の個数: 64

約数和(自身を含む): 879068160

約数和(自身を除く): 622674120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 305231, 610462, 915693, 1220924, 1526155, 1831386, 2136617, 2441848, 3052310, 3662772, 4273234, 4578465, 6104620, 6409851, 7325544, 8546468, 9156930, 10683085, 12209240, 12819702, 17092936, 18313860, 21366170, 25639404, 32049255, 36627720, 42732340, 51278808, 64098510, 85464680, 128197020, 256394040]

約数ペア:

[(1, 256394040), (2, 128197020), (3, 85464680), (4, 64098510), (5, 51278808), (6, 42732340), (7, 36627720), (8, 32049255), (10, 25639404), (12, 21366170), (14, 18313860), (15, 17092936), (20, 12819702), (21, 12209240), (24, 10683085), (28, 9156930), (30, 8546468), (35, 7325544), (40, 6409851), (42, 6104620), (56, 4578465), (60, 4273234), (70, 3662772), (84, 3052310), (105, 2441848), (120, 2136617), (140, 1831386), (168, 1526155), (210, 1220924), (280, 915693), (420, 610462), (840, 305231)]