866840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1667}}^1$

素因数の和:1691

約数の個数: 32

約数和(自身を含む): 2101680

約数和(自身を除く): 1234840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1667, 3334, 6668, 8335, 13336, 16670, 21671, 33340, 43342, 66680, 86684, 108355, 173368, 216710, 433420, 866840]

約数ペア:

[(1, 866840), (2, 433420), (4, 216710), (5, 173368), (8, 108355), (10, 86684), (13, 66680), (20, 43342), (26, 33340), (40, 21671), (52, 16670), (65, 13336), (104, 8335), (130, 6668), (260, 3334), (520, 1667)]