12478360

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1987}}^1$

素因数の和:2155

約数の個数: 32

約数和(自身を含む): 28269360

約数和(自身を除く): 15791000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 1987, 3140, 3974, 6280, 7948, 9935, 15896, 19870, 39740, 79480, 311959, 623918, 1247836, 1559795, 2495672, 3119590, 6239180, 12478360]

約数ペア:

[(1, 12478360), (2, 6239180), (4, 3119590), (5, 2495672), (8, 1559795), (10, 1247836), (20, 623918), (40, 311959), (157, 79480), (314, 39740), (628, 19870), (785, 15896), (1256, 9935), (1570, 7948), (1987, 6280), (3140, 3974)]