8129680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{7817}}^1$

素因数の和:7843

約数の個数: 40

約数和(自身を含む): 20358072

約数和(自身を除く): 12228392

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 7817, 15634, 31268, 39085, 62536, 78170, 101621, 125072, 156340, 203242, 312680, 406484, 508105, 625360, 812968, 1016210, 1625936, 2032420, 4064840, 8129680]

約数ペア:

[(1, 8129680), (2, 4064840), (4, 2032420), (5, 1625936), (8, 1016210), (10, 812968), (13, 625360), (16, 508105), (20, 406484), (26, 312680), (40, 203242), (52, 156340), (65, 125072), (80, 101621), (104, 78170), (130, 62536), (208, 39085), (260, 31268), (520, 15634), (1040, 7817)]