21111180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{331}}^1\times {\mathrm{1063}}^1$

素因数の和:1406

約数の個数: 48

約数和(自身を含む): 59345664

約数和(自身を除く): 38234484

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 331, 662, 993, 1063, 1324, 1655, 1986, 2126, 3189, 3310, 3972, 4252, 4965, 5315, 6378, 6620, 9930, 10630, 12756, 15945, 19860, 21260, 31890, 63780, 351853, 703706, 1055559, 1407412, 1759265, 2111118, 3518530, 4222236, 5277795, 7037060, 10555590, 21111180]

約数ペア:

[(1, 21111180), (2, 10555590), (3, 7037060), (4, 5277795), (5, 4222236), (6, 3518530), (10, 2111118), (12, 1759265), (15, 1407412), (20, 1055559), (30, 703706), (60, 351853), (331, 63780), (662, 31890), (993, 21260), (1063, 19860), (1324, 15945), (1655, 12756), (1986, 10630), (2126, 9930), (3189, 6620), (3310, 6378), (3972, 5315), (4252, 4965)]