21486500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{877}}^1$

素因数の和:910

約数の個数: 72

約数和(自身を含む): 54650232

約数和(自身を除く): 33163732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 125, 140, 175, 196, 245, 250, 350, 490, 500, 700, 875, 877, 980, 1225, 1750, 1754, 2450, 3500, 3508, 4385, 4900, 6125, 6139, 8770, 12250, 12278, 17540, 21925, 24500, 24556, 30695, 42973, 43850, 61390, 85946, 87700, 109625, 122780, 153475, 171892, 214865, 219250, 306950, 429730, 438500, 613900, 767375, 859460, 1074325, 1534750, 2148650, 3069500, 4297300, 5371625, 10743250, 21486500]

約数ペア:

[(1, 21486500), (2, 10743250), (4, 5371625), (5, 4297300), (7, 3069500), (10, 2148650), (14, 1534750), (20, 1074325), (25, 859460), (28, 767375), (35, 613900), (49, 438500), (50, 429730), (70, 306950), (98, 219250), (100, 214865), (125, 171892), (140, 153475), (175, 122780), (196, 109625), (245, 87700), (250, 85946), (350, 61390), (490, 43850), (500, 42973), (700, 30695), (875, 24556), (877, 24500), (980, 21925), (1225, 17540), (1750, 12278), (1754, 12250), (2450, 8770), (3500, 6139), (3508, 6125), (4385, 4900)]