20946520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10687}}^1$

素因数の和:10712

約数の個数: 48

約数和(自身を含む): 54829440

約数和(自身を除く): 33882920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10687, 21374, 42748, 53435, 74809, 85496, 106870, 149618, 213740, 299236, 374045, 427480, 523663, 598472, 748090, 1047326, 1496180, 2094652, 2618315, 2992360, 4189304, 5236630, 10473260, 20946520]

約数ペア:

[(1, 20946520), (2, 10473260), (4, 5236630), (5, 4189304), (7, 2992360), (8, 2618315), (10, 2094652), (14, 1496180), (20, 1047326), (28, 748090), (35, 598472), (40, 523663), (49, 427480), (56, 374045), (70, 299236), (98, 213740), (140, 149618), (196, 106870), (245, 85496), (280, 74809), (392, 53435), (490, 42748), (980, 21374), (1960, 10687)]