420890985

素因数分解:

$3^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15511}}^1$

素因数の和:15595

約数の個数: 40

約数和(自身を含む): 765796416

約数和(自身を除く): 344905431

約数列:

[1, 3, 5, 9, 15, 27, 45, 67, 81, 135, 201, 335, 405, 603, 1005, 1809, 3015, 5427, 9045, 15511, 27135, 46533, 77555, 139599, 232665, 418797, 697995, 1039237, 1256391, 2093985, 3117711, 5196185, 6281955, 9353133, 15588555, 28059399, 46765665, 84178197, 140296995, 420890985]

約数ペア:

[(1, 420890985), (3, 140296995), (5, 84178197), (9, 46765665), (15, 28059399), (27, 15588555), (45, 9353133), (67, 6281955), (81, 5196185), (135, 3117711), (201, 2093985), (335, 1256391), (405, 1039237), (603, 697995), (1005, 418797), (1809, 232665), (3015, 139599), (5427, 77555), (9045, 46533), (15511, 27135)]