219980990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{563}}^1\times {\mathrm{953}}^1$

素因数の和:1564

約数の個数: 32

約数和(自身を含む): 406770336

約数和(自身を除く): 186789346

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 563, 953, 1126, 1906, 2815, 4765, 5630, 9530, 23083, 39073, 46166, 78146, 115415, 195365, 230830, 390730, 536539, 1073078, 2682695, 5365390, 21998099, 43996198, 109990495, 219980990]

約数ペア:

[(1, 219980990), (2, 109990495), (5, 43996198), (10, 21998099), (41, 5365390), (82, 2682695), (205, 1073078), (410, 536539), (563, 390730), (953, 230830), (1126, 195365), (1906, 115415), (2815, 78146), (4765, 46166), (5630, 39073), (9530, 23083)]