81998205

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{6691}}^1$

素因数の和:6761

約数の個数: 32

約数和(自身を含む): 141335040

約数和(自身を除く): 59336835

約数列:

[1, 3, 5, 15, 19, 43, 57, 95, 129, 215, 285, 645, 817, 2451, 4085, 6691, 12255, 20073, 33455, 100365, 127129, 287713, 381387, 635645, 863139, 1438565, 1906935, 4315695, 5466547, 16399641, 27332735, 81998205]

約数ペア:

[(1, 81998205), (3, 27332735), (5, 16399641), (15, 5466547), (19, 4315695), (43, 1906935), (57, 1438565), (95, 863139), (129, 635645), (215, 381387), (285, 287713), (645, 127129), (817, 100365), (2451, 33455), (4085, 20073), (6691, 12255)]