1961225

素因数分解:

$5^2\times 7^2\times {\mathrm{1601}}^1$

素因数の和:1625

約数の個数: 18

約数和(自身を含む): 2830734

約数和(自身を除く): 869509

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 1601, 8005, 11207, 40025, 56035, 78449, 280175, 392245, 1961225]

約数ペア:

[(1, 1961225), (5, 392245), (7, 280175), (25, 78449), (35, 56035), (49, 40025), (175, 11207), (245, 8005), (1225, 1601)]