19817988

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{5113}}^1$

素因数の和:5156

約数の個数: 48

約数和(自身を含む): 51549120

約数和(自身を除く): 31731132

約数列:

[1, 2, 3, 4, 6, 12, 17, 19, 34, 38, 51, 57, 68, 76, 102, 114, 204, 228, 323, 646, 969, 1292, 1938, 3876, 5113, 10226, 15339, 20452, 30678, 61356, 86921, 97147, 173842, 194294, 260763, 291441, 347684, 388588, 521526, 582882, 1043052, 1165764, 1651499, 3302998, 4954497, 6605996, 9908994, 19817988]

約数ペア:

[(1, 19817988), (2, 9908994), (3, 6605996), (4, 4954497), (6, 3302998), (12, 1651499), (17, 1165764), (19, 1043052), (34, 582882), (38, 521526), (51, 388588), (57, 347684), (68, 291441), (76, 260763), (102, 194294), (114, 173842), (204, 97147), (228, 86921), (323, 61356), (646, 30678), (969, 20452), (1292, 15339), (1938, 10226), (3876, 5113)]