19957535

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{641}}^1$

素因数の和:1138

約数の個数: 16

約数和(自身を含む): 25885440

約数和(自身を除く): 5927905

約数列:

[1, 5, 13, 65, 479, 641, 2395, 3205, 6227, 8333, 31135, 41665, 307039, 1535195, 3991507, 19957535]

約数ペア:

[(1, 19957535), (5, 3991507), (13, 1535195), (65, 307039), (479, 41665), (641, 31135), (2395, 8333), (3205, 6227)]