21085764

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{887}}^1$

素因数の和:1184

約数の個数: 48

約数和(自身を含む): 56491008

約数和(自身を除く): 35405244

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 283, 566, 849, 887, 1132, 1698, 1774, 1981, 2661, 3396, 3548, 3962, 5322, 5943, 6209, 7924, 10644, 11886, 12418, 18627, 23772, 24836, 37254, 74508, 251021, 502042, 753063, 1004084, 1506126, 1757147, 3012252, 3514294, 5271441, 7028588, 10542882, 21085764]

約数ペア:

[(1, 21085764), (2, 10542882), (3, 7028588), (4, 5271441), (6, 3514294), (7, 3012252), (12, 1757147), (14, 1506126), (21, 1004084), (28, 753063), (42, 502042), (84, 251021), (283, 74508), (566, 37254), (849, 24836), (887, 23772), (1132, 18627), (1698, 12418), (1774, 11886), (1981, 10644), (2661, 7924), (3396, 6209), (3548, 5943), (3962, 5322)]