20215755

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2213}}^1$

素因数の和:2260

約数の個数: 48

約数和(自身を含む): 41446080

約数和(自身を除く): 21230325

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 63, 87, 105, 145, 203, 261, 315, 435, 609, 1015, 1305, 1827, 2213, 3045, 6639, 9135, 11065, 15491, 19917, 33195, 46473, 64177, 77455, 99585, 139419, 192531, 232365, 320885, 449239, 577593, 697095, 962655, 1347717, 2246195, 2887965, 4043151, 6738585, 20215755]

約数ペア:

[(1, 20215755), (3, 6738585), (5, 4043151), (7, 2887965), (9, 2246195), (15, 1347717), (21, 962655), (29, 697095), (35, 577593), (45, 449239), (63, 320885), (87, 232365), (105, 192531), (145, 139419), (203, 99585), (261, 77455), (315, 64177), (435, 46473), (609, 33195), (1015, 19917), (1305, 15491), (1827, 11065), (2213, 9135), (3045, 6639)]