21123555

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{45427}}^1$

素因数の和:45466

約数の個数: 16

約数和(自身を含む): 34888704

約数和(自身を除く): 13765149

約数列:

[1, 3, 5, 15, 31, 93, 155, 465, 45427, 136281, 227135, 681405, 1408237, 4224711, 7041185, 21123555]

約数ペア:

[(1, 21123555), (3, 7041185), (5, 4224711), (15, 1408237), (31, 681405), (93, 227135), (155, 136281), (465, 45427)]