259322960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{641}}^1$

素因数の和:1056

約数の個数: 80

約数和(自身を含む): 651989520

約数和(自身を除く): 392666560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 389, 520, 641, 778, 1040, 1282, 1556, 1945, 2564, 3112, 3205, 3890, 5057, 5128, 6224, 6410, 7780, 8333, 10114, 10256, 12820, 15560, 16666, 20228, 25285, 25640, 31120, 33332, 40456, 41665, 50570, 51280, 66664, 80912, 83330, 101140, 133328, 166660, 202280, 249349, 333320, 404560, 498698, 666640, 997396, 1246745, 1994792, 2493490, 3241537, 3989584, 4986980, 6483074, 9973960, 12966148, 16207685, 19947920, 25932296, 32415370, 51864592, 64830740, 129661480, 259322960]

約数ペア:

[(1, 259322960), (2, 129661480), (4, 64830740), (5, 51864592), (8, 32415370), (10, 25932296), (13, 19947920), (16, 16207685), (20, 12966148), (26, 9973960), (40, 6483074), (52, 4986980), (65, 3989584), (80, 3241537), (104, 2493490), (130, 1994792), (208, 1246745), (260, 997396), (389, 666640), (520, 498698), (641, 404560), (778, 333320), (1040, 249349), (1282, 202280), (1556, 166660), (1945, 133328), (2564, 101140), (3112, 83330), (3205, 80912), (3890, 66664), (5057, 51280), (5128, 50570), (6224, 41665), (6410, 40456), (7780, 33332), (8333, 31120), (10114, 25640), (10256, 25285), (12820, 20228), (15560, 16666)]