64680025

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{571}}^1$

素因数の和:801

約数の個数: 24

約数和(自身を含む): 84262464

約数和(自身を除く): 19582439

約数列:

[1, 5, 23, 25, 115, 197, 571, 575, 985, 2855, 4531, 4925, 13133, 14275, 22655, 65665, 112487, 113275, 328325, 562435, 2587201, 2812175, 12936005, 64680025]

約数ペア:

[(1, 64680025), (5, 12936005), (23, 2812175), (25, 2587201), (115, 562435), (197, 328325), (571, 113275), (575, 112487), (985, 65665), (2855, 22655), (4531, 14275), (4925, 13133)]