28721553

素因数分解:

$3^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{3571}}^1$

素因数の和:3964

約数の個数: 16

約数和(自身を含む): 43892736

約数和(自身を除く): 15171183

約数列:

[1, 3, 7, 21, 383, 1149, 2681, 3571, 8043, 10713, 24997, 74991, 1367693, 4103079, 9573851, 28721553]

約数ペア:

[(1, 28721553), (3, 9573851), (7, 4103079), (21, 1367693), (383, 74991), (1149, 24997), (2681, 10713), (3571, 8043)]