20961416

素因数分解:

$2^3\times 7^3\times {\mathrm{7639}}^1$

素因数の和:7666

約数の個数: 32

約数和(自身を含む): 45840000

約数和(自身を除く): 24878584

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7639, 15278, 30556, 53473, 61112, 106946, 213892, 374311, 427784, 748622, 1497244, 2620177, 2994488, 5240354, 10480708, 20961416]

約数ペア:

[(1, 20961416), (2, 10480708), (4, 5240354), (7, 2994488), (8, 2620177), (14, 1497244), (28, 748622), (49, 427784), (56, 374311), (98, 213892), (196, 106946), (343, 61112), (392, 53473), (686, 30556), (1372, 15278), (2744, 7639)]