291219920

素因数分解:

$2^4\times 5^1\times {\mathrm{3640249}}^1$

素因数の和:3640262

約数の個数: 20

約数和(自身を含む): 677086500

約数和(自身を除く): 385866580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3640249, 7280498, 14560996, 18201245, 29121992, 36402490, 58243984, 72804980, 145609960, 291219920]

約数ペア:

[(1, 291219920), (2, 145609960), (4, 72804980), (5, 58243984), (8, 36402490), (10, 29121992), (16, 18201245), (20, 14560996), (40, 7280498), (80, 3640249)]