25721165

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 24

約数和(自身を含む): 32816664

約数和(自身を除く): 7095499

約数列:

[1, 5, 31, 53, 101, 155, 265, 505, 961, 1643, 3131, 4805, 5353, 8215, 15655, 26765, 50933, 97061, 165943, 254665, 485305, 829715, 5144233, 25721165]

約数ペア:

[(1, 25721165), (5, 5144233), (31, 829715), (53, 485305), (101, 254665), (155, 165943), (265, 97061), (505, 50933), (961, 26765), (1643, 15655), (3131, 8215), (4805, 5353)]