20537422480

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2355209}}^1$

素因数の和:2355331

約数の個数: 40

約数和(自身を含む): 48187596600

約数和(自身を除く): 27650174120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 2355209, 4710418, 9420836, 11776045, 18841672, 23552090, 37683344, 47104180, 94208360, 188416720, 256717781, 513435562, 1026871124, 1283588905, 2053742248, 2567177810, 4107484496, 5134355620, 10268711240, 20537422480]

約数ペア:

[(1, 20537422480), (2, 10268711240), (4, 5134355620), (5, 4107484496), (8, 2567177810), (10, 2053742248), (16, 1283588905), (20, 1026871124), (40, 513435562), (80, 256717781), (109, 188416720), (218, 94208360), (436, 47104180), (545, 37683344), (872, 23552090), (1090, 18841672), (1744, 11776045), (2180, 9420836), (4360, 4710418), (8720, 2355209)]