20422556

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1087}}^1$

素因数の和:1170

約数の個数: 48

約数和(自身を含む): 45330432

約数和(自身を除く): 24907876

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 61, 77, 122, 154, 244, 308, 427, 671, 854, 1087, 1342, 1708, 2174, 2684, 4348, 4697, 7609, 9394, 11957, 15218, 18788, 23914, 30436, 47828, 66307, 83699, 132614, 167398, 265228, 334796, 464149, 729377, 928298, 1458754, 1856596, 2917508, 5105639, 10211278, 20422556]

約数ペア:

[(1, 20422556), (2, 10211278), (4, 5105639), (7, 2917508), (11, 1856596), (14, 1458754), (22, 928298), (28, 729377), (44, 464149), (61, 334796), (77, 265228), (122, 167398), (154, 132614), (244, 83699), (308, 66307), (427, 47828), (671, 30436), (854, 23914), (1087, 18788), (1342, 15218), (1708, 11957), (2174, 9394), (2684, 7609), (4348, 4697)]