20581428

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2753}}^1$

素因数の和:2856

約数の個数: 48

約数和(自身を含む): 55520640

約数和(自身を除く): 34939212

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 89, 178, 267, 356, 534, 623, 1068, 1246, 1869, 2492, 2753, 3738, 5506, 7476, 8259, 11012, 16518, 19271, 33036, 38542, 57813, 77084, 115626, 231252, 245017, 490034, 735051, 980068, 1470102, 1715119, 2940204, 3430238, 5145357, 6860476, 10290714, 20581428]

約数ペア:

[(1, 20581428), (2, 10290714), (3, 6860476), (4, 5145357), (6, 3430238), (7, 2940204), (12, 1715119), (14, 1470102), (21, 980068), (28, 735051), (42, 490034), (84, 245017), (89, 231252), (178, 115626), (267, 77084), (356, 57813), (534, 38542), (623, 33036), (1068, 19271), (1246, 16518), (1869, 11012), (2492, 8259), (2753, 7476), (3738, 5506)]