19997015

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7589}}^1$

素因数の和:7642

約数の個数: 16

約数和(自身を含む): 26231040

約数和(自身を除く): 6234025

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 7589, 37945, 129013, 235259, 645065, 1176295, 3999403, 19997015]

約数ペア:

[(1, 19997015), (5, 3999403), (17, 1176295), (31, 645065), (85, 235259), (155, 129013), (527, 37945), (2635, 7589)]