20686015

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{9689}}^1$

素因数の和:9762

約数の個数: 16

約数和(自身を含む): 28837440

約数和(自身を除く): 8151425

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 9689, 48445, 67823, 339115, 591029, 2955145, 4137203, 20686015]

約数ペア:

[(1, 20686015), (5, 4137203), (7, 2955145), (35, 591029), (61, 339115), (305, 67823), (427, 48445), (2135, 9689)]