80877140

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{130447}}^1$

素因数の和:130487

約数の個数: 24

約数和(自身を含む): 175322112

約数和(自身を除く): 94444972

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 130447, 260894, 521788, 652235, 1304470, 2608940, 4043857, 8087714, 16175428, 20219285, 40438570, 80877140]

約数ペア:

[(1, 80877140), (2, 40438570), (4, 20219285), (5, 16175428), (10, 8087714), (20, 4043857), (31, 2608940), (62, 1304470), (124, 652235), (155, 521788), (310, 260894), (620, 130447)]