20884095

素因数分解:

$3^3\times 5^1\times {\mathrm{37}}^2\times {\mathrm{113}}^1$

素因数の和:201

約数の個数: 48

約数和(自身を含む): 38495520

約数和(自身を除く): 17611425

約数列:

[1, 3, 5, 9, 15, 27, 37, 45, 111, 113, 135, 185, 333, 339, 555, 565, 999, 1017, 1369, 1665, 1695, 3051, 4107, 4181, 4995, 5085, 6845, 12321, 12543, 15255, 20535, 20905, 36963, 37629, 61605, 62715, 112887, 154697, 184815, 188145, 464091, 564435, 773485, 1392273, 2320455, 4176819, 6961365, 20884095]

約数ペア:

[(1, 20884095), (3, 6961365), (5, 4176819), (9, 2320455), (15, 1392273), (27, 773485), (37, 564435), (45, 464091), (111, 188145), (113, 184815), (135, 154697), (185, 112887), (333, 62715), (339, 61605), (555, 37629), (565, 36963), (999, 20905), (1017, 20535), (1369, 15255), (1665, 12543), (1695, 12321), (3051, 6845), (4107, 5085), (4181, 4995)]