20757405

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{421}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 35245440

約数和(自身を除く): 14488035

約数列:

[1, 3, 5, 15, 19, 57, 95, 173, 285, 421, 519, 865, 1263, 2105, 2595, 3287, 6315, 7999, 9861, 16435, 23997, 39995, 49305, 72833, 119985, 218499, 364165, 1092495, 1383827, 4151481, 6919135, 20757405]

約数ペア:

[(1, 20757405), (3, 6919135), (5, 4151481), (15, 1383827), (19, 1092495), (57, 364165), (95, 218499), (173, 119985), (285, 72833), (421, 49305), (519, 39995), (865, 23997), (1263, 16435), (2105, 9861), (2595, 7999), (3287, 6315)]