280805320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{412949}}^1$

素因数の和:412977

約数の個数: 32

約数和(自身を含む): 668979000

約数和(自身を除く): 388173680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 412949, 825898, 1651796, 2064745, 3303592, 4129490, 7020133, 8258980, 14040266, 16517960, 28080532, 35100665, 56161064, 70201330, 140402660, 280805320]

約数ペア:

[(1, 280805320), (2, 140402660), (4, 70201330), (5, 56161064), (8, 35100665), (10, 28080532), (17, 16517960), (20, 14040266), (34, 8258980), (40, 7020133), (68, 4129490), (85, 3303592), (136, 2064745), (170, 1651796), (340, 825898), (680, 412949)]