31120020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2083}}^1$

素因数の和:2181

約数の個数: 72

約数和(自身を含む): 95580576

約数和(自身を除く): 64460556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 83, 90, 166, 180, 249, 332, 415, 498, 747, 830, 996, 1245, 1494, 1660, 2083, 2490, 2988, 3735, 4166, 4980, 6249, 7470, 8332, 10415, 12498, 14940, 18747, 20830, 24996, 31245, 37494, 41660, 62490, 74988, 93735, 124980, 172889, 187470, 345778, 374940, 518667, 691556, 864445, 1037334, 1556001, 1728890, 2074668, 2593335, 3112002, 3457780, 5186670, 6224004, 7780005, 10373340, 15560010, 31120020]

約数ペア:

[(1, 31120020), (2, 15560010), (3, 10373340), (4, 7780005), (5, 6224004), (6, 5186670), (9, 3457780), (10, 3112002), (12, 2593335), (15, 2074668), (18, 1728890), (20, 1556001), (30, 1037334), (36, 864445), (45, 691556), (60, 518667), (83, 374940), (90, 345778), (166, 187470), (180, 172889), (249, 124980), (332, 93735), (415, 74988), (498, 62490), (747, 41660), (830, 37494), (996, 31245), (1245, 24996), (1494, 20830), (1660, 18747), (2083, 14940), (2490, 12498), (2988, 10415), (3735, 8332), (4166, 7470), (4980, 6249)]