20080725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1663}}^1$

素因数の和:1706

約数の個数: 48

約数和(自身を含む): 39616512

約数和(自身を除く): 19535787

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 69, 75, 105, 115, 161, 175, 345, 483, 525, 575, 805, 1663, 1725, 2415, 4025, 4989, 8315, 11641, 12075, 24945, 34923, 38249, 41575, 58205, 114747, 124725, 174615, 191245, 267743, 291025, 573735, 803229, 873075, 956225, 1338715, 2868675, 4016145, 6693575, 20080725]

約数ペア:

[(1, 20080725), (3, 6693575), (5, 4016145), (7, 2868675), (15, 1338715), (21, 956225), (23, 873075), (25, 803229), (35, 573735), (69, 291025), (75, 267743), (105, 191245), (115, 174615), (161, 124725), (175, 114747), (345, 58205), (483, 41575), (525, 38249), (575, 34923), (805, 24945), (1663, 12075), (1725, 11641), (2415, 8315), (4025, 4989)]