20154540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{1021}}^1$

素因数の和:1087

約数の個数: 96

約数和(自身を含む): 65931264

約数和(自身を除く): 45776724

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 47, 60, 70, 84, 94, 105, 140, 141, 188, 210, 235, 282, 329, 420, 470, 564, 658, 705, 940, 987, 1021, 1316, 1410, 1645, 1974, 2042, 2820, 3063, 3290, 3948, 4084, 4935, 5105, 6126, 6580, 7147, 9870, 10210, 12252, 14294, 15315, 19740, 20420, 21441, 28588, 30630, 35735, 42882, 47987, 61260, 71470, 85764, 95974, 107205, 142940, 143961, 191948, 214410, 239935, 287922, 335909, 428820, 479870, 575844, 671818, 719805, 959740, 1007727, 1343636, 1439610, 1679545, 2015454, 2879220, 3359090, 4030908, 5038635, 6718180, 10077270, 20154540]

約数ペア:

[(1, 20154540), (2, 10077270), (3, 6718180), (4, 5038635), (5, 4030908), (6, 3359090), (7, 2879220), (10, 2015454), (12, 1679545), (14, 1439610), (15, 1343636), (20, 1007727), (21, 959740), (28, 719805), (30, 671818), (35, 575844), (42, 479870), (47, 428820), (60, 335909), (70, 287922), (84, 239935), (94, 214410), (105, 191948), (140, 143961), (141, 142940), (188, 107205), (210, 95974), (235, 85764), (282, 71470), (329, 61260), (420, 47987), (470, 42882), (564, 35735), (658, 30630), (705, 28588), (940, 21441), (987, 20420), (1021, 19740), (1316, 15315), (1410, 14294), (1645, 12252), (1974, 10210), (2042, 9870), (2820, 7147), (3063, 6580), (3290, 6126), (3948, 5105), (4084, 4935)]