20805484

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 44573760

約数和(自身を除く): 23768276

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 109, 119, 218, 238, 401, 436, 476, 763, 802, 1526, 1604, 1853, 2807, 3052, 3706, 5614, 6817, 7412, 11228, 12971, 13634, 25942, 27268, 43709, 47719, 51884, 87418, 95438, 174836, 190876, 305963, 611926, 743053, 1223852, 1486106, 2972212, 5201371, 10402742, 20805484]

約数ペア:

[(1, 20805484), (2, 10402742), (4, 5201371), (7, 2972212), (14, 1486106), (17, 1223852), (28, 743053), (34, 611926), (68, 305963), (109, 190876), (119, 174836), (218, 95438), (238, 87418), (401, 51884), (436, 47719), (476, 43709), (763, 27268), (802, 25942), (1526, 13634), (1604, 12971), (1853, 11228), (2807, 7412), (3052, 6817), (3706, 5614)]