19909030

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{86561}}^1$

素因数の和:86591

約数の個数: 16

約数和(自身を含む): 37394784

約数和(自身を除く): 17485754

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 86561, 173122, 432805, 865610, 1990903, 3981806, 9954515, 19909030]

約数ペア:

[(1, 19909030), (2, 9954515), (5, 3981806), (10, 1990903), (23, 865610), (46, 432805), (115, 173122), (230, 86561)]