21420056

素因数分解:

$2^3\times 7^2\times {\mathrm{53}}^1\times {\mathrm{1031}}^1$

素因数の和:1104

約数の個数: 48

約数和(自身を含む): 47647440

約数和(自身を除く): 26227384

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 53, 56, 98, 106, 196, 212, 371, 392, 424, 742, 1031, 1484, 2062, 2597, 2968, 4124, 5194, 7217, 8248, 10388, 14434, 20776, 28868, 50519, 54643, 57736, 101038, 109286, 202076, 218572, 382501, 404152, 437144, 765002, 1530004, 2677507, 3060008, 5355014, 10710028, 21420056]

約数ペア:

[(1, 21420056), (2, 10710028), (4, 5355014), (7, 3060008), (8, 2677507), (14, 1530004), (28, 765002), (49, 437144), (53, 404152), (56, 382501), (98, 218572), (106, 202076), (196, 109286), (212, 101038), (371, 57736), (392, 54643), (424, 50519), (742, 28868), (1031, 20776), (1484, 14434), (2062, 10388), (2597, 8248), (2968, 7217), (4124, 5194)]