129372220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{157771}}^1$

素因数の和:157821

約数の個数: 24

約数和(自身を含む): 278309808

約数和(自身を除く): 148937588

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 157771, 315542, 631084, 788855, 1577710, 3155420, 6468611, 12937222, 25874444, 32343055, 64686110, 129372220]

約数ペア:

[(1, 129372220), (2, 64686110), (4, 32343055), (5, 25874444), (10, 12937222), (20, 6468611), (41, 3155420), (82, 1577710), (164, 788855), (205, 631084), (410, 315542), (820, 157771)]