807980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:649

約数の個数: 24

約数和(自身を含む): 1723680

約数和(自身を除く): 915700

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 569, 710, 1138, 1420, 2276, 2845, 5690, 11380, 40399, 80798, 161596, 201995, 403990, 807980]

約数ペア:

[(1, 807980), (2, 403990), (4, 201995), (5, 161596), (10, 80798), (20, 40399), (71, 11380), (142, 5690), (284, 2845), (355, 2276), (569, 1420), (710, 1138)]