64634375

素因数分解:

$5^5\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:118

約数の個数: 48

約数和(自身を含む): 91431648

約数和(自身を除く): 26797273

約数列:

[1, 5, 13, 25, 37, 43, 65, 125, 185, 215, 325, 481, 559, 625, 925, 1075, 1591, 1625, 2405, 2795, 3125, 4625, 5375, 7955, 8125, 12025, 13975, 20683, 23125, 26875, 39775, 40625, 60125, 69875, 103415, 115625, 134375, 198875, 300625, 349375, 517075, 994375, 1503125, 1746875, 2585375, 4971875, 12926875, 64634375]

約数ペア:

[(1, 64634375), (5, 12926875), (13, 4971875), (25, 2585375), (37, 1746875), (43, 1503125), (65, 994375), (125, 517075), (185, 349375), (215, 300625), (325, 198875), (481, 134375), (559, 115625), (625, 103415), (925, 69875), (1075, 60125), (1591, 40625), (1625, 39775), (2405, 26875), (2795, 23125), (3125, 20683), (4625, 13975), (5375, 12025), (7955, 8125)]