64830740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{641}}^1$

素因数の和:1052

約数の個数: 48

約数和(自身を含む): 147223440

約数和(自身を除く): 82392700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 389, 641, 778, 1282, 1556, 1945, 2564, 3205, 3890, 5057, 6410, 7780, 8333, 10114, 12820, 16666, 20228, 25285, 33332, 41665, 50570, 83330, 101140, 166660, 249349, 498698, 997396, 1246745, 2493490, 3241537, 4986980, 6483074, 12966148, 16207685, 32415370, 64830740]

約数ペア:

[(1, 64830740), (2, 32415370), (4, 16207685), (5, 12966148), (10, 6483074), (13, 4986980), (20, 3241537), (26, 2493490), (52, 1246745), (65, 997396), (130, 498698), (260, 249349), (389, 166660), (641, 101140), (778, 83330), (1282, 50570), (1556, 41665), (1945, 33332), (2564, 25285), (3205, 20228), (3890, 16666), (5057, 12820), (6410, 10114), (7780, 8333)]