19900738

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{467}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 35380800

約数和(自身を除く): 15480062

約数列:

[1, 2, 11, 13, 22, 26, 143, 149, 286, 298, 467, 934, 1639, 1937, 3278, 3874, 5137, 6071, 10274, 12142, 21307, 42614, 66781, 69583, 133562, 139166, 765413, 904579, 1530826, 1809158, 9950369, 19900738]

約数ペア:

[(1, 19900738), (2, 9950369), (11, 1809158), (13, 1530826), (22, 904579), (26, 765413), (143, 139166), (149, 133562), (286, 69583), (298, 66781), (467, 42614), (934, 21307), (1639, 12142), (1937, 10274), (3278, 6071), (3874, 5137)]