18663860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{30103}}^1$

素因数の和:30143

約数の個数: 24

約数和(自身を含む): 40459776

約数和(自身を除く): 21795916

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 30103, 60206, 120412, 150515, 301030, 602060, 933193, 1866386, 3732772, 4665965, 9331930, 18663860]

約数ペア:

[(1, 18663860), (2, 9331930), (4, 4665965), (5, 3732772), (10, 1866386), (20, 933193), (31, 602060), (62, 301030), (124, 150515), (155, 120412), (310, 60206), (620, 30103)]