21977230

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 44643312

約数和(自身を除く): 22666082

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 121, 205, 242, 410, 443, 451, 605, 886, 902, 1210, 2215, 2255, 4430, 4510, 4873, 4961, 9746, 9922, 18163, 24365, 24805, 36326, 48730, 49610, 53603, 90815, 107206, 181630, 199793, 268015, 399586, 536030, 998965, 1997930, 2197723, 4395446, 10988615, 21977230]

約数ペア:

[(1, 21977230), (2, 10988615), (5, 4395446), (10, 2197723), (11, 1997930), (22, 998965), (41, 536030), (55, 399586), (82, 268015), (110, 199793), (121, 181630), (205, 107206), (242, 90815), (410, 53603), (443, 49610), (451, 48730), (605, 36326), (886, 24805), (902, 24365), (1210, 18163), (2215, 9922), (2255, 9746), (4430, 4961), (4510, 4873)]