21816872

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{331}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 51632640

約数和(自身を除く): 29815768

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 107, 154, 214, 308, 331, 428, 616, 662, 749, 856, 1177, 1324, 1498, 2317, 2354, 2648, 2996, 3641, 4634, 4708, 5992, 7282, 8239, 9268, 9416, 14564, 16478, 18536, 25487, 29128, 32956, 35417, 50974, 65912, 70834, 101948, 141668, 203896, 247919, 283336, 389587, 495838, 779174, 991676, 1558348, 1983352, 2727109, 3116696, 5454218, 10908436, 21816872]

約数ペア:

[(1, 21816872), (2, 10908436), (4, 5454218), (7, 3116696), (8, 2727109), (11, 1983352), (14, 1558348), (22, 991676), (28, 779174), (44, 495838), (56, 389587), (77, 283336), (88, 247919), (107, 203896), (154, 141668), (214, 101948), (308, 70834), (331, 65912), (428, 50974), (616, 35417), (662, 32956), (749, 29128), (856, 25487), (1177, 18536), (1324, 16478), (1498, 14564), (2317, 9416), (2354, 9268), (2648, 8239), (2996, 7282), (3641, 5992), (4634, 4708)]