21660475

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1471}}^1$

素因数の和:1531

約数の個数: 24

約数和(自身を含む): 29204480

約数和(自身を除く): 7544005

約数列:

[1, 5, 19, 25, 31, 95, 155, 475, 589, 775, 1471, 2945, 7355, 14725, 27949, 36775, 45601, 139745, 228005, 698725, 866419, 1140025, 4332095, 21660475]

約数ペア:

[(1, 21660475), (5, 4332095), (19, 1140025), (25, 866419), (31, 698725), (95, 228005), (155, 139745), (475, 45601), (589, 36775), (775, 27949), (1471, 14725), (2945, 7355)]