257915280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{153521}}^1$

素因数の和:153544

約数の個数: 80

約数和(自身を含む): 913762944

約数和(自身を除く): 655847664

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 153521, 307042, 460563, 614084, 767605, 921126, 1074647, 1228168, 1535210, 1842252, 2149294, 2302815, 2456336, 3070420, 3223941, 3684504, 4298588, 4605630, 5373235, 6140840, 6447882, 7369008, 8597176, 9211260, 10746470, 12281680, 12895764, 16119705, 17194352, 18422520, 21492940, 25791528, 32239410, 36845040, 42985880, 51583056, 64478820, 85971760, 128957640, 257915280]

約数ペア:

[(1, 257915280), (2, 128957640), (3, 85971760), (4, 64478820), (5, 51583056), (6, 42985880), (7, 36845040), (8, 32239410), (10, 25791528), (12, 21492940), (14, 18422520), (15, 17194352), (16, 16119705), (20, 12895764), (21, 12281680), (24, 10746470), (28, 9211260), (30, 8597176), (35, 7369008), (40, 6447882), (42, 6140840), (48, 5373235), (56, 4605630), (60, 4298588), (70, 3684504), (80, 3223941), (84, 3070420), (105, 2456336), (112, 2302815), (120, 2149294), (140, 1842252), (168, 1535210), (210, 1228168), (240, 1074647), (280, 921126), (336, 767605), (420, 614084), (560, 460563), (840, 307042), (1680, 153521)]