19987095

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{811}}^1$

素因数の和:903

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 13688169

約数列:

[1, 3, 5, 15, 31, 53, 93, 155, 159, 265, 465, 795, 811, 1643, 2433, 4055, 4929, 8215, 12165, 24645, 25141, 42983, 75423, 125705, 128949, 214915, 377115, 644745, 1332473, 3997419, 6662365, 19987095]

約数ペア:

[(1, 19987095), (3, 6662365), (5, 3997419), (15, 1332473), (31, 644745), (53, 377115), (93, 214915), (155, 128949), (159, 125705), (265, 75423), (465, 42983), (795, 25141), (811, 24645), (1643, 12165), (2433, 8215), (4055, 4929)]