81223515

素因数分解:

$3^2\times 5^1\times {\mathrm{1307}}^1\times {\mathrm{1381}}^1$

素因数の和:2699

約数の個数: 24

約数和(自身を含む): 140997168

約数和(自身を除く): 59773653

約数列:

[1, 3, 5, 9, 15, 45, 1307, 1381, 3921, 4143, 6535, 6905, 11763, 12429, 19605, 20715, 58815, 62145, 1804967, 5414901, 9024835, 16244703, 27074505, 81223515]

約数ペア:

[(1, 81223515), (3, 27074505), (5, 16244703), (9, 9024835), (15, 5414901), (45, 1804967), (1307, 62145), (1381, 58815), (3921, 20715), (4143, 19605), (6535, 12429), (6905, 11763)]