21713820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{9781}}^1$

素因数の和:9830

約数の個数: 48

約数和(自身を含む): 62448288

約数和(自身を除く): 40734468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 370, 444, 555, 740, 1110, 2220, 9781, 19562, 29343, 39124, 48905, 58686, 97810, 117372, 146715, 195620, 293430, 361897, 586860, 723794, 1085691, 1447588, 1809485, 2171382, 3618970, 4342764, 5428455, 7237940, 10856910, 21713820]

約数ペア:

[(1, 21713820), (2, 10856910), (3, 7237940), (4, 5428455), (5, 4342764), (6, 3618970), (10, 2171382), (12, 1809485), (15, 1447588), (20, 1085691), (30, 723794), (37, 586860), (60, 361897), (74, 293430), (111, 195620), (148, 146715), (185, 117372), (222, 97810), (370, 58686), (444, 48905), (555, 39124), (740, 29343), (1110, 19562), (2220, 9781)]