1971825

素因数分解:

$3^1\times 5^2\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:505

約数の個数: 24

約数和(自身を含む): 3321216

約数和(自身を除く): 1349391

約数列:

[1, 3, 5, 15, 25, 61, 75, 183, 305, 431, 915, 1293, 1525, 2155, 4575, 6465, 10775, 26291, 32325, 78873, 131455, 394365, 657275, 1971825]

約数ペア:

[(1, 1971825), (3, 657275), (5, 394365), (15, 131455), (25, 78873), (61, 32325), (75, 26291), (183, 10775), (305, 6465), (431, 4575), (915, 2155), (1293, 1525)]