20618520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13217}}^1$

素因数の和:13244

約数の個数: 64

約数和(自身を含む): 66618720

約数和(自身を除く): 46000200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13217, 26434, 39651, 52868, 66085, 79302, 105736, 132170, 158604, 171821, 198255, 264340, 317208, 343642, 396510, 515463, 528680, 687284, 793020, 859105, 1030926, 1374568, 1586040, 1718210, 2061852, 2577315, 3436420, 4123704, 5154630, 6872840, 10309260, 20618520]

約数ペア:

[(1, 20618520), (2, 10309260), (3, 6872840), (4, 5154630), (5, 4123704), (6, 3436420), (8, 2577315), (10, 2061852), (12, 1718210), (13, 1586040), (15, 1374568), (20, 1030926), (24, 859105), (26, 793020), (30, 687284), (39, 528680), (40, 515463), (52, 396510), (60, 343642), (65, 317208), (78, 264340), (104, 198255), (120, 171821), (130, 158604), (156, 132170), (195, 105736), (260, 79302), (312, 66085), (390, 52868), (520, 39651), (780, 26434), (1560, 13217)]