20651204

素因数分解:

$2^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{8287}}^1$

素因数の和:8387

約数の個数: 24

約数和(自身を含む): 41771520

約数和(自身を除く): 21120316

約数列:

[1, 2, 4, 7, 14, 28, 89, 178, 356, 623, 1246, 2492, 8287, 16574, 33148, 58009, 116018, 232036, 737543, 1475086, 2950172, 5162801, 10325602, 20651204]

約数ペア:

[(1, 20651204), (2, 10325602), (4, 5162801), (7, 2950172), (14, 1475086), (28, 737543), (89, 232036), (178, 116018), (356, 58009), (623, 33148), (1246, 16574), (2492, 8287)]