21138858

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{6949}}^1$

素因数の和:6983

約数の個数: 36

約数和(自身を含む): 49602150

約数和(自身を除く): 28463292

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 169, 234, 338, 507, 1014, 1521, 3042, 6949, 13898, 20847, 41694, 62541, 90337, 125082, 180674, 271011, 542022, 813033, 1174381, 1626066, 2348762, 3523143, 7046286, 10569429, 21138858]

約数ペア:

[(1, 21138858), (2, 10569429), (3, 7046286), (6, 3523143), (9, 2348762), (13, 1626066), (18, 1174381), (26, 813033), (39, 542022), (78, 271011), (117, 180674), (169, 125082), (234, 90337), (338, 62541), (507, 41694), (1014, 20847), (1521, 13898), (3042, 6949)]