20685476

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^2\times {\mathrm{263}}^1$

素因数の和:380

約数の個数: 36

約数和(自身を含む): 42326592

約数和(自身を除く): 21641116

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 263, 371, 526, 742, 1052, 1484, 1841, 2809, 3682, 5618, 7364, 11236, 13939, 19663, 27878, 39326, 55756, 78652, 97573, 195146, 390292, 738767, 1477534, 2955068, 5171369, 10342738, 20685476]

約数ペア:

[(1, 20685476), (2, 10342738), (4, 5171369), (7, 2955068), (14, 1477534), (28, 738767), (53, 390292), (106, 195146), (212, 97573), (263, 78652), (371, 55756), (526, 39326), (742, 27878), (1052, 19663), (1484, 13939), (1841, 11236), (2809, 7364), (3682, 5618)]