20439828

素因数分解:

$2^2\times 3^2\times {\mathrm{79}}^1\times {\mathrm{7187}}^1$

素因数の和:7276

約数の個数: 36

約数和(自身を含む): 52328640

約数和(自身を除く): 31888812

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 79, 158, 237, 316, 474, 711, 948, 1422, 2844, 7187, 14374, 21561, 28748, 43122, 64683, 86244, 129366, 258732, 567773, 1135546, 1703319, 2271092, 3406638, 5109957, 6813276, 10219914, 20439828]

約数ペア:

[(1, 20439828), (2, 10219914), (3, 6813276), (4, 5109957), (6, 3406638), (9, 2271092), (12, 1703319), (18, 1135546), (36, 567773), (79, 258732), (158, 129366), (237, 86244), (316, 64683), (474, 43122), (711, 28748), (948, 21561), (1422, 14374), (2844, 7187)]