21051212

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{383}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 45760512

約数和(自身を除く): 24709300

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 151, 182, 302, 364, 383, 604, 766, 1057, 1532, 1963, 2114, 2681, 3926, 4228, 4979, 5362, 7852, 9958, 10724, 13741, 19916, 27482, 34853, 54964, 57833, 69706, 115666, 139412, 231332, 404831, 751829, 809662, 1503658, 1619324, 3007316, 5262803, 10525606, 21051212]

約数ペア:

[(1, 21051212), (2, 10525606), (4, 5262803), (7, 3007316), (13, 1619324), (14, 1503658), (26, 809662), (28, 751829), (52, 404831), (91, 231332), (151, 139412), (182, 115666), (302, 69706), (364, 57833), (383, 54964), (604, 34853), (766, 27482), (1057, 19916), (1532, 13741), (1963, 10724), (2114, 9958), (2681, 7852), (3926, 5362), (4228, 4979)]