68630980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1987}}^1$

素因数の和:2164

約数の個数: 48

約数和(自身を含む): 158308416

約数和(自身を除く): 89677436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 628, 785, 1570, 1727, 1987, 3140, 3454, 3974, 6908, 7948, 8635, 9935, 17270, 19870, 21857, 34540, 39740, 43714, 87428, 109285, 218570, 311959, 437140, 623918, 1247836, 1559795, 3119590, 3431549, 6239180, 6863098, 13726196, 17157745, 34315490, 68630980]

約数ペア:

[(1, 68630980), (2, 34315490), (4, 17157745), (5, 13726196), (10, 6863098), (11, 6239180), (20, 3431549), (22, 3119590), (44, 1559795), (55, 1247836), (110, 623918), (157, 437140), (220, 311959), (314, 218570), (628, 109285), (785, 87428), (1570, 43714), (1727, 39740), (1987, 34540), (3140, 21857), (3454, 19870), (3974, 17270), (6908, 9935), (7948, 8635)]