1221920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{1091}}^1$

素因数の和:1113

約数の個数: 48

約数和(自身を含む): 3302208

約数和(自身を除く): 2080288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1091, 1120, 2182, 4364, 5455, 7637, 8728, 10910, 15274, 17456, 21820, 30548, 34912, 38185, 43640, 61096, 76370, 87280, 122192, 152740, 174560, 244384, 305480, 610960, 1221920]

約数ペア:

[(1, 1221920), (2, 610960), (4, 305480), (5, 244384), (7, 174560), (8, 152740), (10, 122192), (14, 87280), (16, 76370), (20, 61096), (28, 43640), (32, 38185), (35, 34912), (40, 30548), (56, 21820), (70, 17456), (80, 15274), (112, 10910), (140, 8728), (160, 7637), (224, 5455), (280, 4364), (560, 2182), (1091, 1120)]