20416755

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:168

約数の個数: 48

約数和(自身を含む): 35675136

約数和(自身を除く): 15258381

約数列:

[1, 3, 5, 15, 23, 31, 69, 83, 93, 115, 155, 249, 345, 415, 465, 529, 713, 1245, 1587, 1909, 2139, 2573, 2645, 3565, 5727, 7719, 7935, 9545, 10695, 12865, 16399, 28635, 38595, 43907, 49197, 59179, 81995, 131721, 177537, 219535, 245985, 295895, 658605, 887685, 1361117, 4083351, 6805585, 20416755]

約数ペア:

[(1, 20416755), (3, 6805585), (5, 4083351), (15, 1361117), (23, 887685), (31, 658605), (69, 295895), (83, 245985), (93, 219535), (115, 177537), (155, 131721), (249, 81995), (345, 59179), (415, 49197), (465, 43907), (529, 38595), (713, 28635), (1245, 16399), (1587, 12865), (1909, 10695), (2139, 9545), (2573, 7935), (2645, 7719), (3565, 5727)]