77897420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{125641}}^1$

素因数の和:125681

約数の個数: 24

約数和(自身を含む): 168862848

約数和(自身を除く): 90965428

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 125641, 251282, 502564, 628205, 1256410, 2512820, 3894871, 7789742, 15579484, 19474355, 38948710, 77897420]

約数ペア:

[(1, 77897420), (2, 38948710), (4, 19474355), (5, 15579484), (10, 7789742), (20, 3894871), (31, 2512820), (62, 1256410), (124, 628205), (155, 502564), (310, 251282), (620, 125641)]