497849980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1\times {\mathrm{719}}^1$

素因数の和:1206

約数の個数: 48

約数和(自身を含む): 1061424000

約数和(自身を除く): 563574020

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 389, 445, 719, 778, 890, 1438, 1556, 1780, 1945, 2876, 3595, 3890, 7190, 7780, 14380, 34621, 63991, 69242, 127982, 138484, 173105, 255964, 279691, 319955, 346210, 559382, 639910, 692420, 1118764, 1279820, 1398455, 2796910, 5593820, 24892499, 49784998, 99569996, 124462495, 248924990, 497849980]

約数ペア:

[(1, 497849980), (2, 248924990), (4, 124462495), (5, 99569996), (10, 49784998), (20, 24892499), (89, 5593820), (178, 2796910), (356, 1398455), (389, 1279820), (445, 1118764), (719, 692420), (778, 639910), (890, 559382), (1438, 346210), (1556, 319955), (1780, 279691), (1945, 255964), (2876, 173105), (3595, 138484), (3890, 127982), (7190, 69242), (7780, 63991), (14380, 34621)]