31911220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1987}}^1$

素因数の和:2080

約数の個数: 48

約数和(自身を含む): 74144448

約数和(自身を除く): 42233228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 73, 110, 146, 220, 292, 365, 730, 803, 1460, 1606, 1987, 3212, 3974, 4015, 7948, 8030, 9935, 16060, 19870, 21857, 39740, 43714, 87428, 109285, 145051, 218570, 290102, 437140, 580204, 725255, 1450510, 1595561, 2901020, 3191122, 6382244, 7977805, 15955610, 31911220]

約数ペア:

[(1, 31911220), (2, 15955610), (4, 7977805), (5, 6382244), (10, 3191122), (11, 2901020), (20, 1595561), (22, 1450510), (44, 725255), (55, 580204), (73, 437140), (110, 290102), (146, 218570), (220, 145051), (292, 109285), (365, 87428), (730, 43714), (803, 39740), (1460, 21857), (1606, 19870), (1987, 16060), (3212, 9935), (3974, 8030), (4015, 7948)]