21855908

素因数分解:

$2^2\times {\mathrm{29}}^2\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:224

約数の個数: 36

約数和(自身を含む): 40606020

約数和(自身を除く): 18750112

約数列:

[1, 2, 4, 29, 58, 73, 89, 116, 146, 178, 292, 356, 841, 1682, 2117, 2581, 3364, 4234, 5162, 6497, 8468, 10324, 12994, 25988, 61393, 74849, 122786, 149698, 188413, 245572, 299396, 376826, 753652, 5463977, 10927954, 21855908]

約数ペア:

[(1, 21855908), (2, 10927954), (4, 5463977), (29, 753652), (58, 376826), (73, 299396), (89, 245572), (116, 188413), (146, 149698), (178, 122786), (292, 74849), (356, 61393), (841, 25988), (1682, 12994), (2117, 10324), (2581, 8468), (3364, 6497), (4234, 5162)]