20857380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{11987}}^1$

素因数の和:12028

約数の個数: 48

約数和(自身を含む): 60419520

約数和(自身を除く): 39562140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740, 11987, 23974, 35961, 47948, 59935, 71922, 119870, 143844, 179805, 239740, 347623, 359610, 695246, 719220, 1042869, 1390492, 1738115, 2085738, 3476230, 4171476, 5214345, 6952460, 10428690, 20857380]

約数ペア:

[(1, 20857380), (2, 10428690), (3, 6952460), (4, 5214345), (5, 4171476), (6, 3476230), (10, 2085738), (12, 1738115), (15, 1390492), (20, 1042869), (29, 719220), (30, 695246), (58, 359610), (60, 347623), (87, 239740), (116, 179805), (145, 143844), (174, 119870), (290, 71922), (348, 59935), (435, 47948), (580, 35961), (870, 23974), (1740, 11987)]