18291860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{181}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 40115712

約数和(自身を除く): 21823852

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 163, 181, 310, 326, 362, 620, 652, 724, 815, 905, 1630, 1810, 3260, 3620, 5053, 5611, 10106, 11222, 20212, 22444, 25265, 28055, 29503, 50530, 56110, 59006, 101060, 112220, 118012, 147515, 295030, 590060, 914593, 1829186, 3658372, 4572965, 9145930, 18291860]

約数ペア:

[(1, 18291860), (2, 9145930), (4, 4572965), (5, 3658372), (10, 1829186), (20, 914593), (31, 590060), (62, 295030), (124, 147515), (155, 118012), (163, 112220), (181, 101060), (310, 59006), (326, 56110), (362, 50530), (620, 29503), (652, 28055), (724, 25265), (815, 22444), (905, 20212), (1630, 11222), (1810, 10106), (3260, 5611), (3620, 5053)]