20911025

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{887}}^1$

素因数の和:961

約数の個数: 24

約数和(自身を含む): 27748224

約数和(自身を除く): 6837199

約数列:

[1, 5, 23, 25, 41, 115, 205, 575, 887, 943, 1025, 4435, 4715, 20401, 22175, 23575, 36367, 102005, 181835, 510025, 836441, 909175, 4182205, 20911025]

約数ペア:

[(1, 20911025), (5, 4182205), (23, 909175), (25, 836441), (41, 510025), (115, 181835), (205, 102005), (575, 36367), (887, 23575), (943, 22175), (1025, 20401), (4435, 4715)]