21372915

素因数分解:

$3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{17167}}^1$

素因数の和:17258

約数の個数: 16

約数和(自身を含む): 34610688

約数和(自身を除く): 13237773

約数列:

[1, 3, 5, 15, 83, 249, 415, 1245, 17167, 51501, 85835, 257505, 1424861, 4274583, 7124305, 21372915]

約数ペア:

[(1, 21372915), (3, 7124305), (5, 4274583), (15, 1424861), (83, 257505), (249, 85835), (415, 51501), (1245, 17167)]