19958185

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{7489}}^1$

素因数の和:7548

約数の個数: 16

約数和(自身を含む): 26424720

約数和(自身を除く): 6466535

約数列:

[1, 5, 13, 41, 65, 205, 533, 2665, 7489, 37445, 97357, 307049, 486785, 1535245, 3991637, 19958185]

約数ペア:

[(1, 19958185), (5, 3991637), (13, 1535245), (41, 486785), (65, 307049), (205, 97357), (533, 37445), (2665, 7489)]