64236875

素因数分解:

$5^4\times {\mathrm{79}}^1\times {\mathrm{1301}}^1$

素因数の和:1400

約数の個数: 20

約数和(自身を含む): 81348960

約数和(自身を除く): 17112085

約数列:

[1, 5, 25, 79, 125, 395, 625, 1301, 1975, 6505, 9875, 32525, 49375, 102779, 162625, 513895, 813125, 2569475, 12847375, 64236875]

約数ペア:

[(1, 64236875), (5, 12847375), (25, 2569475), (79, 813125), (125, 513895), (395, 162625), (625, 102779), (1301, 49375), (1975, 32525), (6505, 9875)]