396918140

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{48523}}^1$

素因数の和:48941

約数の個数: 24

約数和(自身を含む): 835583280

約数和(自身を除く): 438665140

約数列:

[1, 2, 4, 5, 10, 20, 409, 818, 1636, 2045, 4090, 8180, 48523, 97046, 194092, 242615, 485230, 970460, 19845907, 39691814, 79383628, 99229535, 198459070, 396918140]

約数ペア:

[(1, 396918140), (2, 198459070), (4, 99229535), (5, 79383628), (10, 39691814), (20, 19845907), (409, 970460), (818, 485230), (1636, 242615), (2045, 194092), (4090, 97046), (8180, 48523)]