25219413

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1$

素因数の和:785

約数の個数: 24

約数和(自身を含む): 37604736

約数和(自身を除く): 12385323

約数列:

[1, 3, 9, 61, 71, 183, 213, 549, 639, 647, 1941, 4331, 5823, 12993, 38979, 39467, 45937, 118401, 137811, 355203, 413433, 2802157, 8406471, 25219413]

約数ペア:

[(1, 25219413), (3, 8406471), (9, 2802157), (61, 413433), (71, 355203), (183, 137811), (213, 118401), (549, 45937), (639, 39467), (647, 38979), (1941, 12993), (4331, 5823)]