21281923

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{653}}^1$

素因数の和:798

約数の個数: 16

約数和(自身を含む): 24171840

約数和(自身を除く): 2889917

約数列:

[1, 13, 23, 109, 299, 653, 1417, 2507, 8489, 15019, 32591, 71177, 195247, 925301, 1637071, 21281923]

約数ペア:

[(1, 21281923), (13, 1637071), (23, 925301), (109, 195247), (299, 71177), (653, 32591), (1417, 15019), (2507, 8489)]