21328868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{823}}^1$

素因数の和:888

約数の個数: 48

約数和(自身を含む): 44298240

約数和(自身を除く): 22969372

約数列:

[1, 2, 4, 11, 19, 22, 31, 38, 44, 62, 76, 124, 209, 341, 418, 589, 682, 823, 836, 1178, 1364, 1646, 2356, 3292, 6479, 9053, 12958, 15637, 18106, 25513, 25916, 31274, 36212, 51026, 62548, 102052, 172007, 280643, 344014, 484747, 561286, 688028, 969494, 1122572, 1938988, 5332217, 10664434, 21328868]

約数ペア:

[(1, 21328868), (2, 10664434), (4, 5332217), (11, 1938988), (19, 1122572), (22, 969494), (31, 688028), (38, 561286), (44, 484747), (62, 344014), (76, 280643), (124, 172007), (209, 102052), (341, 62548), (418, 51026), (589, 36212), (682, 31274), (823, 25916), (836, 25513), (1178, 18106), (1364, 15637), (1646, 12958), (2356, 9053), (3292, 6479)]