15939820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{607}}^1$

素因数の和:730

約数の個数: 48

約数和(自身を含む): 36465408

約数和(自身を除く): 20525588

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 607, 1010, 1214, 1313, 2020, 2428, 2626, 3035, 5252, 6070, 6565, 7891, 12140, 13130, 15782, 26260, 31564, 39455, 61307, 78910, 122614, 157820, 245228, 306535, 613070, 796991, 1226140, 1593982, 3187964, 3984955, 7969910, 15939820]

約数ペア:

[(1, 15939820), (2, 7969910), (4, 3984955), (5, 3187964), (10, 1593982), (13, 1226140), (20, 796991), (26, 613070), (52, 306535), (65, 245228), (101, 157820), (130, 122614), (202, 78910), (260, 61307), (404, 39455), (505, 31564), (607, 26260), (1010, 15782), (1214, 13130), (1313, 12140), (2020, 7891), (2428, 6565), (2626, 6070), (3035, 5252)]