72258020

素因数分解:

$2^2\times 5^1\times {\mathrm{1871}}^1\times {\mathrm{1931}}^1$

素因数の和:3811

約数の個数: 24

約数和(自身を含む): 151901568

約数和(自身を除く): 79643548

約数列:

[1, 2, 4, 5, 10, 20, 1871, 1931, 3742, 3862, 7484, 7724, 9355, 9655, 18710, 19310, 37420, 38620, 3612901, 7225802, 14451604, 18064505, 36129010, 72258020]

約数ペア:

[(1, 72258020), (2, 36129010), (4, 18064505), (5, 14451604), (10, 7225802), (20, 3612901), (1871, 38620), (1931, 37420), (3742, 19310), (3862, 18710), (7484, 9655), (7724, 9355)]