64278940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1861}}^1$

素因数の和:2038

約数の個数: 48

約数和(自身を含む): 148274784

約数和(自身を除く): 83995844

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 628, 785, 1570, 1727, 1861, 3140, 3454, 3722, 6908, 7444, 8635, 9305, 17270, 18610, 20471, 34540, 37220, 40942, 81884, 102355, 204710, 292177, 409420, 584354, 1168708, 1460885, 2921770, 3213947, 5843540, 6427894, 12855788, 16069735, 32139470, 64278940]

約数ペア:

[(1, 64278940), (2, 32139470), (4, 16069735), (5, 12855788), (10, 6427894), (11, 5843540), (20, 3213947), (22, 2921770), (44, 1460885), (55, 1168708), (110, 584354), (157, 409420), (220, 292177), (314, 204710), (628, 102355), (785, 81884), (1570, 40942), (1727, 37220), (1861, 34540), (3140, 20471), (3454, 18610), (3722, 17270), (6908, 9305), (7444, 8635)]