21879770

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{443}}^1\times {\mathrm{449}}^1$

素因数の和:910

約数の個数: 32

約数和(自身を含む): 43156800

約数和(自身を除く): 21277030

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 443, 449, 886, 898, 2215, 2245, 4430, 4490, 4873, 4939, 9746, 9878, 24365, 24695, 48730, 49390, 198907, 397814, 994535, 1989070, 2187977, 4375954, 10939885, 21879770]

約数ペア:

[(1, 21879770), (2, 10939885), (5, 4375954), (10, 2187977), (11, 1989070), (22, 994535), (55, 397814), (110, 198907), (443, 49390), (449, 48730), (886, 24695), (898, 24365), (2215, 9878), (2245, 9746), (4430, 4939), (4490, 4873)]