20158125

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{827}}^1$

素因数の和:863

約数の個数: 40

約数和(自身を含む): 36213408

約数和(自身を除く): 16055283

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 625, 827, 975, 1625, 1875, 2481, 4135, 4875, 8125, 10751, 12405, 20675, 24375, 32253, 53755, 62025, 103375, 161265, 268775, 310125, 516875, 806325, 1343875, 1550625, 4031625, 6719375, 20158125]

約数ペア:

[(1, 20158125), (3, 6719375), (5, 4031625), (13, 1550625), (15, 1343875), (25, 806325), (39, 516875), (65, 310125), (75, 268775), (125, 161265), (195, 103375), (325, 62025), (375, 53755), (625, 32253), (827, 24375), (975, 20675), (1625, 12405), (1875, 10751), (2481, 8125), (4135, 4875)]