20449305

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 37200384

約数和(自身を除く): 16751079

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 107, 137, 155, 279, 321, 411, 465, 535, 685, 963, 1233, 1395, 1605, 2055, 3317, 4247, 4815, 6165, 9951, 12741, 14659, 16585, 21235, 29853, 38223, 43977, 49755, 63705, 73295, 131931, 149265, 191115, 219885, 454429, 659655, 1363287, 2272145, 4089861, 6816435, 20449305]

約数ペア:

[(1, 20449305), (3, 6816435), (5, 4089861), (9, 2272145), (15, 1363287), (31, 659655), (45, 454429), (93, 219885), (107, 191115), (137, 149265), (155, 131931), (279, 73295), (321, 63705), (411, 49755), (465, 43977), (535, 38223), (685, 29853), (963, 21235), (1233, 16585), (1395, 14659), (1605, 12741), (2055, 9951), (3317, 6165), (4247, 4815)]