81446140

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{17783}}^1$

素因数の和:18021

約数の個数: 24

約数和(自身を含む): 171793440

約数和(自身を除く): 90347300

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4580, 17783, 35566, 71132, 88915, 177830, 355660, 4072307, 8144614, 16289228, 20361535, 40723070, 81446140]

約数ペア:

[(1, 81446140), (2, 40723070), (4, 20361535), (5, 16289228), (10, 8144614), (20, 4072307), (229, 355660), (458, 177830), (916, 88915), (1145, 71132), (2290, 35566), (4580, 17783)]