4078125

素因数分解:

$3^2\times 5^6\times {\mathrm{29}}^1$

素因数の和:65

約数の個数: 42

約数和(自身を含む): 7617090

約数和(自身を除く): 3538965

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 125, 145, 225, 261, 375, 435, 625, 725, 1125, 1305, 1875, 2175, 3125, 3625, 5625, 6525, 9375, 10875, 15625, 18125, 28125, 32625, 46875, 54375, 90625, 140625, 163125, 271875, 453125, 815625, 1359375, 4078125]

約数ペア:

[(1, 4078125), (3, 1359375), (5, 815625), (9, 453125), (15, 271875), (25, 163125), (29, 140625), (45, 90625), (75, 54375), (87, 46875), (125, 32625), (145, 28125), (225, 18125), (261, 15625), (375, 10875), (435, 9375), (625, 6525), (725, 5625), (1125, 3625), (1305, 3125), (1875, 2175)]