198900790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{4421}}^1$

素因数の和:4848

約数の個数: 32

約数和(自身を含む): 391612320

約数和(自身を除く): 192711530

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 409, 818, 2045, 4090, 4421, 4499, 8842, 8998, 22105, 22495, 44210, 44990, 48631, 97262, 243155, 486310, 1808189, 3616378, 9040945, 18081890, 19890079, 39780158, 99450395, 198900790]

約数ペア:

[(1, 198900790), (2, 99450395), (5, 39780158), (10, 19890079), (11, 18081890), (22, 9040945), (55, 3616378), (110, 1808189), (409, 486310), (818, 243155), (2045, 97262), (4090, 48631), (4421, 44990), (4499, 44210), (8842, 22495), (8998, 22105)]