21205856

素因数分解:

$2^5\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2309}}^1$

素因数の和:2367

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 27692224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 82, 112, 164, 224, 287, 328, 574, 656, 1148, 1312, 2296, 2309, 4592, 4618, 9184, 9236, 16163, 18472, 32326, 36944, 64652, 73888, 94669, 129304, 189338, 258608, 378676, 517216, 662683, 757352, 1325366, 1514704, 2650732, 3029408, 5301464, 10602928, 21205856]

約数ペア:

[(1, 21205856), (2, 10602928), (4, 5301464), (7, 3029408), (8, 2650732), (14, 1514704), (16, 1325366), (28, 757352), (32, 662683), (41, 517216), (56, 378676), (82, 258608), (112, 189338), (164, 129304), (224, 94669), (287, 73888), (328, 64652), (574, 36944), (656, 32326), (1148, 18472), (1312, 16163), (2296, 9236), (2309, 9184), (4592, 4618)]