19993065

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 33116160

約数和(自身を除く): 13123095

約数列:

[1, 3, 5, 15, 43, 129, 139, 215, 223, 417, 645, 669, 695, 1115, 2085, 3345, 5977, 9589, 17931, 28767, 29885, 30997, 47945, 89655, 92991, 143835, 154985, 464955, 1332871, 3998613, 6664355, 19993065]

約数ペア:

[(1, 19993065), (3, 6664355), (5, 3998613), (15, 1332871), (43, 464955), (129, 154985), (139, 143835), (215, 92991), (223, 89655), (417, 47945), (645, 30997), (669, 29885), (695, 28767), (1115, 17931), (2085, 9589), (3345, 5977)]