21857800

素因数分解:

$2^3\times 5^2\times {\mathrm{293}}^1\times {\mathrm{373}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 51129540

約数和(自身を除く): 29271740

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 293, 373, 586, 746, 1172, 1465, 1492, 1865, 2344, 2930, 2984, 3730, 5860, 7325, 7460, 9325, 11720, 14650, 14920, 18650, 29300, 37300, 58600, 74600, 109289, 218578, 437156, 546445, 874312, 1092890, 2185780, 2732225, 4371560, 5464450, 10928900, 21857800]

約数ペア:

[(1, 21857800), (2, 10928900), (4, 5464450), (5, 4371560), (8, 2732225), (10, 2185780), (20, 1092890), (25, 874312), (40, 546445), (50, 437156), (100, 218578), (200, 109289), (293, 74600), (373, 58600), (586, 37300), (746, 29300), (1172, 18650), (1465, 14920), (1492, 14650), (1865, 11720), (2344, 9325), (2930, 7460), (2984, 7325), (3730, 5860)]