20889975

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3923}}^1$

素因数の和:4007

約数の個数: 24

約数和(自身を含む): 35033472

約数和(自身を除く): 14143497

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3923, 5325, 11769, 19615, 58845, 98075, 278533, 294225, 835599, 1392665, 4177995, 6963325, 20889975]

約数ペア:

[(1, 20889975), (3, 6963325), (5, 4177995), (15, 1392665), (25, 835599), (71, 294225), (75, 278533), (213, 98075), (355, 58845), (1065, 19615), (1775, 11769), (3923, 5325)]