21281777982

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{396353}}^1$

素因数の和:396537

約数の個数: 48

約数和(自身を含む): 48846666960

約数和(自身を除く): 27564888978

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 157, 171, 314, 342, 471, 942, 1413, 2826, 2983, 5966, 8949, 17898, 26847, 53694, 396353, 792706, 1189059, 2378118, 3567177, 7134354, 7530707, 15061414, 22592121, 45184242, 62227421, 67776363, 124454842, 135552726, 186682263, 373364526, 560046789, 1120093578, 1182320999, 2364641998, 3546962997, 7093925994, 10640888991, 21281777982]

約数ペア:

[(1, 21281777982), (2, 10640888991), (3, 7093925994), (6, 3546962997), (9, 2364641998), (18, 1182320999), (19, 1120093578), (38, 560046789), (57, 373364526), (114, 186682263), (157, 135552726), (171, 124454842), (314, 67776363), (342, 62227421), (471, 45184242), (942, 22592121), (1413, 15061414), (2826, 7530707), (2983, 7134354), (5966, 3567177), (8949, 2378118), (17898, 1189059), (26847, 792706), (53694, 396353)]