20398428

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{10691}}^1$

素因数の和:10754

約数の個数: 36

約数和(自身を含む): 52540488

約数和(自身を除く): 32142060

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 954, 1908, 10691, 21382, 32073, 42764, 64146, 96219, 128292, 192438, 384876, 566623, 1133246, 1699869, 2266492, 3399738, 5099607, 6799476, 10199214, 20398428]

約数ペア:

[(1, 20398428), (2, 10199214), (3, 6799476), (4, 5099607), (6, 3399738), (9, 2266492), (12, 1699869), (18, 1133246), (36, 566623), (53, 384876), (106, 192438), (159, 128292), (212, 96219), (318, 64146), (477, 42764), (636, 32073), (954, 21382), (1908, 10691)]