19987016

素因数分解:

$2^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5851}}^1$

素因数の和:5925

約数の個数: 32

約数和(自身を含む): 43538880

約数和(自身を除く): 23551864

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 61, 122, 244, 427, 488, 854, 1708, 3416, 5851, 11702, 23404, 40957, 46808, 81914, 163828, 327656, 356911, 713822, 1427644, 2498377, 2855288, 4996754, 9993508, 19987016]

約数ペア:

[(1, 19987016), (2, 9993508), (4, 4996754), (7, 2855288), (8, 2498377), (14, 1427644), (28, 713822), (56, 356911), (61, 327656), (122, 163828), (244, 81914), (427, 46808), (488, 40957), (854, 23404), (1708, 11702), (3416, 5851)]