16663988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 34621440

約数和(自身を除く): 17957452

約数列:

[1, 2, 4, 11, 19, 22, 31, 38, 44, 62, 76, 124, 209, 341, 418, 589, 643, 682, 836, 1178, 1286, 1364, 2356, 2572, 6479, 7073, 12217, 12958, 14146, 19933, 24434, 25916, 28292, 39866, 48868, 79732, 134387, 219263, 268774, 378727, 438526, 537548, 757454, 877052, 1514908, 4165997, 8331994, 16663988]

約数ペア:

[(1, 16663988), (2, 8331994), (4, 4165997), (11, 1514908), (19, 877052), (22, 757454), (31, 537548), (38, 438526), (44, 378727), (62, 268774), (76, 219263), (124, 134387), (209, 79732), (341, 48868), (418, 39866), (589, 28292), (643, 25916), (682, 24434), (836, 19933), (1178, 14146), (1286, 12958), (1364, 12217), (2356, 7073), (2572, 6479)]