28405690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{123503}}^1$

素因数の和:123533

約数の個数: 16

約数和(自身を含む): 53353728

約数和(自身を除く): 24948038

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 123503, 247006, 617515, 1235030, 2840569, 5681138, 14202845, 28405690]

約数ペア:

[(1, 28405690), (2, 14202845), (5, 5681138), (10, 2840569), (23, 1235030), (46, 617515), (115, 247006), (230, 123503)]