21001688

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{233}}^1\times {\mathrm{593}}^1$

素因数の和:851

約数の個数: 32

約数和(自身を含む): 41698800

約数和(自身を除く): 20697112

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 233, 466, 593, 932, 1186, 1864, 2372, 4427, 4744, 8854, 11267, 17708, 22534, 35416, 45068, 90136, 138169, 276338, 552676, 1105352, 2625211, 5250422, 10500844, 21001688]

約数ペア:

[(1, 21001688), (2, 10500844), (4, 5250422), (8, 2625211), (19, 1105352), (38, 552676), (76, 276338), (152, 138169), (233, 90136), (466, 45068), (593, 35416), (932, 22534), (1186, 17708), (1864, 11267), (2372, 8854), (4427, 4744)]