64926875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:225

約数の個数: 40

約数和(自身を含む): 89483856

約数和(自身を除く): 24556981

約数列:

[1, 5, 13, 25, 61, 65, 125, 131, 305, 325, 625, 655, 793, 1525, 1625, 1703, 3275, 3965, 7625, 7991, 8125, 8515, 16375, 19825, 38125, 39955, 42575, 81875, 99125, 103883, 199775, 212875, 495625, 519415, 998875, 1064375, 2597075, 4994375, 12985375, 64926875]

約数ペア:

[(1, 64926875), (5, 12985375), (13, 4994375), (25, 2597075), (61, 1064375), (65, 998875), (125, 519415), (131, 495625), (305, 212875), (325, 199775), (625, 103883), (655, 99125), (793, 81875), (1525, 42575), (1625, 39955), (1703, 38125), (3275, 19825), (3965, 16375), (7625, 8515), (7991, 8125)]