21885640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78163}}^1$

素因数の和:78181

約数の個数: 32

約数和(自身を含む): 56278080

約数和(自身を除く): 34392440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78163, 156326, 312652, 390815, 547141, 625304, 781630, 1094282, 1563260, 2188564, 2735705, 3126520, 4377128, 5471410, 10942820, 21885640]

約数ペア:

[(1, 21885640), (2, 10942820), (4, 5471410), (5, 4377128), (7, 3126520), (8, 2735705), (10, 2188564), (14, 1563260), (20, 1094282), (28, 781630), (35, 625304), (40, 547141), (56, 390815), (70, 312652), (140, 156326), (280, 78163)]