81640225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{3463}}^1$

素因数の和:3537

約数の個数: 24

約数和(自身を含む): 108243072

約数和(自身を除く): 26602847

約数列:

[1, 5, 23, 25, 41, 115, 205, 575, 943, 1025, 3463, 4715, 17315, 23575, 79649, 86575, 141983, 398245, 709915, 1991225, 3265609, 3549575, 16328045, 81640225]

約数ペア:

[(1, 81640225), (5, 16328045), (23, 3549575), (25, 3265609), (41, 1991225), (115, 709915), (205, 398245), (575, 141983), (943, 86575), (1025, 79649), (3463, 23575), (4715, 17315)]