21201124

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4703}}^1$

素因数の和:4744

約数の個数: 36

約数和(自身を含む): 45045504

約数和(自身を除く): 23844380

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4508, 4703, 9406, 18812, 32921, 65842, 108169, 131684, 216338, 230447, 432676, 460894, 757183, 921788, 1514366, 3028732, 5300281, 10600562, 21201124]

約数ペア:

[(1, 21201124), (2, 10600562), (4, 5300281), (7, 3028732), (14, 1514366), (23, 921788), (28, 757183), (46, 460894), (49, 432676), (92, 230447), (98, 216338), (161, 131684), (196, 108169), (322, 65842), (644, 32921), (1127, 18812), (2254, 9406), (4508, 4703)]