667788680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1284209}}^1$

素因数の和:1284233

約数の個数: 32

約数和(自身を含む): 1618104600

約数和(自身を除く): 950315920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1284209, 2568418, 5136836, 6421045, 10273672, 12842090, 16694717, 25684180, 33389434, 51368360, 66778868, 83473585, 133557736, 166947170, 333894340, 667788680]

約数ペア:

[(1, 667788680), (2, 333894340), (4, 166947170), (5, 133557736), (8, 83473585), (10, 66778868), (13, 51368360), (20, 33389434), (26, 25684180), (40, 16694717), (52, 12842090), (65, 10273672), (104, 6421045), (130, 5136836), (260, 2568418), (520, 1284209)]