21282015

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61687}}^1$

素因数の和:61718

約数の個数: 16

約数和(自身を含む): 35532288

約数和(自身を除く): 14250273

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61687, 185061, 308435, 925305, 1418801, 4256403, 7094005, 21282015]

約数ペア:

[(1, 21282015), (3, 7094005), (5, 4256403), (15, 1418801), (23, 925305), (69, 308435), (115, 185061), (345, 61687)]