20648680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39709}}^1$

素因数の和:39733

約数の個数: 32

約数和(自身を含む): 50034600

約数和(自身を除く): 29385920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39709, 79418, 158836, 198545, 317672, 397090, 516217, 794180, 1032434, 1588360, 2064868, 2581085, 4129736, 5162170, 10324340, 20648680]

約数ペア:

[(1, 20648680), (2, 10324340), (4, 5162170), (5, 4129736), (8, 2581085), (10, 2064868), (13, 1588360), (20, 1032434), (26, 794180), (40, 516217), (52, 397090), (65, 317672), (104, 198545), (130, 158836), (260, 79418), (520, 39709)]