21426156980

素因数分解:

$2^2\times 5^1\times {\mathrm{8971}}^1\times {\mathrm{119419}}^1$

素因数の和:128399

約数の個数: 24

約数和(自身を含む): 45000322080

約数和(自身を除く): 23574165100

約数列:

[1, 2, 4, 5, 10, 20, 8971, 17942, 35884, 44855, 89710, 119419, 179420, 238838, 477676, 597095, 1194190, 2388380, 1071307849, 2142615698, 4285231396, 5356539245, 10713078490, 21426156980]

約数ペア:

[(1, 21426156980), (2, 10713078490), (4, 5356539245), (5, 4285231396), (10, 2142615698), (20, 1071307849), (8971, 2388380), (17942, 1194190), (35884, 597095), (44855, 477676), (89710, 238838), (119419, 179420)]