251013920

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:550

約数の個数: 96

約数和(自身を含む): 616215600

約数和(自身を除く): 365201680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 109, 148, 160, 185, 218, 296, 370, 389, 436, 545, 592, 740, 778, 872, 1090, 1184, 1480, 1556, 1744, 1945, 2180, 2960, 3112, 3488, 3890, 4033, 4360, 5920, 6224, 7780, 8066, 8720, 12448, 14393, 15560, 16132, 17440, 20165, 28786, 31120, 32264, 40330, 42401, 57572, 62240, 64528, 71965, 80660, 84802, 115144, 129056, 143930, 161320, 169604, 212005, 230288, 287860, 322640, 339208, 424010, 460576, 575720, 645280, 678416, 848020, 1151440, 1356832, 1568837, 1696040, 2302880, 3137674, 3392080, 6275348, 6784160, 7844185, 12550696, 15688370, 25101392, 31376740, 50202784, 62753480, 125506960, 251013920]

約数ペア:

[(1, 251013920), (2, 125506960), (4, 62753480), (5, 50202784), (8, 31376740), (10, 25101392), (16, 15688370), (20, 12550696), (32, 7844185), (37, 6784160), (40, 6275348), (74, 3392080), (80, 3137674), (109, 2302880), (148, 1696040), (160, 1568837), (185, 1356832), (218, 1151440), (296, 848020), (370, 678416), (389, 645280), (436, 575720), (545, 460576), (592, 424010), (740, 339208), (778, 322640), (872, 287860), (1090, 230288), (1184, 212005), (1480, 169604), (1556, 161320), (1744, 143930), (1945, 129056), (2180, 115144), (2960, 84802), (3112, 80660), (3488, 71965), (3890, 64528), (4033, 62240), (4360, 57572), (5920, 42401), (6224, 40330), (7780, 32264), (8066, 31120), (8720, 28786), (12448, 20165), (14393, 17440), (15560, 16132)]