489863980

素因数分解:

$2^2\times 5^1\times {\mathrm{1789}}^1\times {\mathrm{13691}}^1$

素因数の和:15489

約数の個数: 24

約数和(自身を含む): 1029364560

約数和(自身を除く): 539500580

約数列:

[1, 2, 4, 5, 10, 20, 1789, 3578, 7156, 8945, 13691, 17890, 27382, 35780, 54764, 68455, 136910, 273820, 24493199, 48986398, 97972796, 122465995, 244931990, 489863980]

約数ペア:

[(1, 489863980), (2, 244931990), (4, 122465995), (5, 97972796), (10, 48986398), (20, 24493199), (1789, 273820), (3578, 136910), (7156, 68455), (8945, 54764), (13691, 35780), (17890, 27382)]