28921475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{419}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 39372480

約数和(自身を除く): 10451005

約数列:

[1, 5, 11, 25, 55, 251, 275, 419, 1255, 2095, 2761, 4609, 6275, 10475, 13805, 23045, 69025, 105169, 115225, 525845, 1156859, 2629225, 5784295, 28921475]

約数ペア:

[(1, 28921475), (5, 5784295), (11, 2629225), (25, 1156859), (55, 525845), (251, 115225), (275, 105169), (419, 69025), (1255, 23045), (2095, 13805), (2761, 10475), (4609, 6275)]