20927925

素因数分解:

$3^2\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1979}}^1$

素因数の和:2042

約数の個数: 36

約数和(自身を含む): 38301120

約数和(自身を除く): 17373195

約数列:

[1, 3, 5, 9, 15, 25, 45, 47, 75, 141, 225, 235, 423, 705, 1175, 1979, 2115, 3525, 5937, 9895, 10575, 17811, 29685, 49475, 89055, 93013, 148425, 279039, 445275, 465065, 837117, 1395195, 2325325, 4185585, 6975975, 20927925]

約数ペア:

[(1, 20927925), (3, 6975975), (5, 4185585), (9, 2325325), (15, 1395195), (25, 837117), (45, 465065), (47, 445275), (75, 279039), (141, 148425), (225, 93013), (235, 89055), (423, 49475), (705, 29685), (1175, 17811), (1979, 10575), (2115, 9895), (3525, 5937)]