21318808

素因数分解:

$2^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{10289}}^1$

素因数の和:10339

約数の個数: 32

約数和(自身を含む): 46922400

約数和(自身を除く): 25603592

約数列:

[1, 2, 4, 7, 8, 14, 28, 37, 56, 74, 148, 259, 296, 518, 1036, 2072, 10289, 20578, 41156, 72023, 82312, 144046, 288092, 380693, 576184, 761386, 1522772, 2664851, 3045544, 5329702, 10659404, 21318808]

約数ペア:

[(1, 21318808), (2, 10659404), (4, 5329702), (7, 3045544), (8, 2664851), (14, 1522772), (28, 761386), (37, 576184), (56, 380693), (74, 288092), (148, 144046), (259, 82312), (296, 72023), (518, 41156), (1036, 20578), (2072, 10289)]