19156501

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:134

約数の個数: 48

約数和(自身を含む): 26717040

約数和(自身を除く): 7560539

約数列:

[1, 7, 13, 17, 29, 49, 61, 91, 119, 203, 221, 377, 427, 493, 637, 793, 833, 1037, 1421, 1547, 1769, 2639, 2989, 3451, 5551, 6409, 7259, 10829, 12383, 13481, 18473, 22997, 24157, 30073, 38857, 44863, 50813, 86681, 94367, 160979, 210511, 314041, 390949, 660569, 1126853, 1473577, 2736643, 19156501]

約数ペア:

[(1, 19156501), (7, 2736643), (13, 1473577), (17, 1126853), (29, 660569), (49, 390949), (61, 314041), (91, 210511), (119, 160979), (203, 94367), (221, 86681), (377, 50813), (427, 44863), (493, 38857), (637, 30073), (793, 24157), (833, 22997), (1037, 18473), (1421, 13481), (1547, 12383), (1769, 10829), (2639, 7259), (2989, 6409), (3451, 5551)]