656280040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{4111}}^1$

素因数の和:4442

約数の個数: 64

約数和(自身を含む): 1595784960

約数和(自身を除く): 939504920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 307, 520, 614, 1228, 1535, 2456, 3070, 3991, 4111, 6140, 7982, 8222, 12280, 15964, 16444, 19955, 20555, 31928, 32888, 39910, 41110, 53443, 79820, 82220, 106886, 159640, 164440, 213772, 267215, 427544, 534430, 1068860, 1262077, 2137720, 2524154, 5048308, 6310385, 10096616, 12620770, 16407001, 25241540, 32814002, 50483080, 65628004, 82035005, 131256008, 164070010, 328140020, 656280040]

約数ペア:

[(1, 656280040), (2, 328140020), (4, 164070010), (5, 131256008), (8, 82035005), (10, 65628004), (13, 50483080), (20, 32814002), (26, 25241540), (40, 16407001), (52, 12620770), (65, 10096616), (104, 6310385), (130, 5048308), (260, 2524154), (307, 2137720), (520, 1262077), (614, 1068860), (1228, 534430), (1535, 427544), (2456, 267215), (3070, 213772), (3991, 164440), (4111, 159640), (6140, 106886), (7982, 82220), (8222, 79820), (12280, 53443), (15964, 41110), (16444, 39910), (19955, 32888), (20555, 31928)]