420680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{809}}^1$

素因数の和:833

約数の個数: 32

約数和(自身を含む): 1020600

約数和(自身を除く): 599920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 809, 1618, 3236, 4045, 6472, 8090, 10517, 16180, 21034, 32360, 42068, 52585, 84136, 105170, 210340, 420680]

約数ペア:

[(1, 420680), (2, 210340), (4, 105170), (5, 84136), (8, 52585), (10, 42068), (13, 32360), (20, 21034), (26, 16180), (40, 10517), (52, 8090), (65, 6472), (104, 4045), (130, 3236), (260, 1618), (520, 809)]