17971325

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{197}}^1$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 23201640

約数和(自身を除く): 5230315

約数列:

[1, 5, 25, 41, 89, 197, 205, 445, 985, 1025, 2225, 3649, 4925, 8077, 17533, 18245, 40385, 87665, 91225, 201925, 438325, 718853, 3594265, 17971325]

約数ペア:

[(1, 17971325), (5, 3594265), (25, 718853), (41, 438325), (89, 201925), (197, 91225), (205, 87665), (445, 40385), (985, 18245), (1025, 17533), (2225, 8077), (3649, 4925)]