20890380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49739}}^1$

素因数の和:49758

約数の個数: 48

約数和(自身を含む): 66850560

約数和(自身を除く): 45960180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49739, 99478, 149217, 198956, 248695, 298434, 348173, 497390, 596868, 696346, 746085, 994780, 1044519, 1392692, 1492170, 1740865, 2089038, 2984340, 3481730, 4178076, 5222595, 6963460, 10445190, 20890380]

約数ペア:

[(1, 20890380), (2, 10445190), (3, 6963460), (4, 5222595), (5, 4178076), (6, 3481730), (7, 2984340), (10, 2089038), (12, 1740865), (14, 1492170), (15, 1392692), (20, 1044519), (21, 994780), (28, 746085), (30, 696346), (35, 596868), (42, 497390), (60, 348173), (70, 298434), (84, 248695), (105, 198956), (140, 149217), (210, 99478), (420, 49739)]