21869145

素因数分解:

$3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1583}}^1$

素因数の和:1901

約数の個数: 24

約数和(自身を含む): 38054016

約数和(自身を除く): 16184871

約数列:

[1, 3, 5, 9, 15, 45, 307, 921, 1535, 1583, 2763, 4605, 4749, 7915, 13815, 14247, 23745, 71235, 485981, 1457943, 2429905, 4373829, 7289715, 21869145]

約数ペア:

[(1, 21869145), (3, 7289715), (5, 4373829), (9, 2429905), (15, 1457943), (45, 485981), (307, 71235), (921, 23745), (1535, 14247), (1583, 13815), (2763, 7915), (4605, 4749)]