20545875

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{2609}}^1$

素因数の和:2637

約数の個数: 48

約数和(自身を含む): 42344640

約数和(自身を除く): 21798765

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 875, 1125, 1575, 2609, 2625, 7827, 7875, 13045, 18263, 23481, 39135, 54789, 65225, 91315, 117405, 164367, 195675, 273945, 326125, 456575, 587025, 821835, 978375, 1369725, 2282875, 2935125, 4109175, 6848625, 20545875]

約数ペア:

[(1, 20545875), (3, 6848625), (5, 4109175), (7, 2935125), (9, 2282875), (15, 1369725), (21, 978375), (25, 821835), (35, 587025), (45, 456575), (63, 326125), (75, 273945), (105, 195675), (125, 164367), (175, 117405), (225, 91315), (315, 65225), (375, 54789), (525, 39135), (875, 23481), (1125, 18263), (1575, 13045), (2609, 7875), (2625, 7827)]