201444920

素因数分解:

$2^3\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{3907}}^1$

素因数の和:5207

約数の個数: 32

約数和(自身を含む): 453718800

約数和(自身を除く): 252273880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1289, 2578, 3907, 5156, 6445, 7814, 10312, 12890, 15628, 19535, 25780, 31256, 39070, 51560, 78140, 156280, 5036123, 10072246, 20144492, 25180615, 40288984, 50361230, 100722460, 201444920]

約数ペア:

[(1, 201444920), (2, 100722460), (4, 50361230), (5, 40288984), (8, 25180615), (10, 20144492), (20, 10072246), (40, 5036123), (1289, 156280), (2578, 78140), (3907, 51560), (5156, 39070), (6445, 31256), (7814, 25780), (10312, 19535), (12890, 15628)]