20360440

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1181}}^1$

素因数の和:1623

約数の個数: 32

約数和(自身を含む): 45956160

約数和(自身を除く): 25595720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1181, 1724, 2155, 2362, 3448, 4310, 4724, 5905, 8620, 9448, 11810, 17240, 23620, 47240, 509011, 1018022, 2036044, 2545055, 4072088, 5090110, 10180220, 20360440]

約数ペア:

[(1, 20360440), (2, 10180220), (4, 5090110), (5, 4072088), (8, 2545055), (10, 2036044), (20, 1018022), (40, 509011), (431, 47240), (862, 23620), (1181, 17240), (1724, 11810), (2155, 9448), (2362, 8620), (3448, 5905), (4310, 4724)]