21080703

素因数分解:

$3^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{2621}}^1$

素因数の和:3014

約数の個数: 16

約数和(自身を含む): 32219136

約数和(自身を除く): 11138433

約数列:

[1, 3, 7, 21, 383, 1149, 2621, 2681, 7863, 8043, 18347, 55041, 1003843, 3011529, 7026901, 21080703]

約数ペア:

[(1, 21080703), (3, 7026901), (7, 3011529), (21, 1003843), (383, 55041), (1149, 18347), (2621, 8043), (2681, 7863)]