172389680

素因数分解:

$2^4\times 5^1\times {\mathrm{2154871}}^1$

素因数の和:2154884

約数の個数: 20

約数和(自身を含む): 400806192

約数和(自身を除く): 228416512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2154871, 4309742, 8619484, 10774355, 17238968, 21548710, 34477936, 43097420, 86194840, 172389680]

約数ペア:

[(1, 172389680), (2, 86194840), (4, 43097420), (5, 34477936), (8, 21548710), (10, 17238968), (16, 10774355), (20, 8619484), (40, 4309742), (80, 2154871)]