21931250

素因数分解:

$2^1\times 5^5\times {\mathrm{11}}^2\times {\mathrm{29}}^1$

素因数の和:78

約数の個数: 72

約数和(自身を含む): 46754820

約数和(自身を除く): 24823570

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 121, 125, 145, 242, 250, 275, 290, 319, 550, 605, 625, 638, 725, 1210, 1250, 1375, 1450, 1595, 2750, 3025, 3125, 3190, 3509, 3625, 6050, 6250, 6875, 7018, 7250, 7975, 13750, 15125, 15950, 17545, 18125, 30250, 34375, 35090, 36250, 39875, 68750, 75625, 79750, 87725, 90625, 151250, 175450, 181250, 199375, 378125, 398750, 438625, 756250, 877250, 996875, 1993750, 2193125, 4386250, 10965625, 21931250]

約数ペア:

[(1, 21931250), (2, 10965625), (5, 4386250), (10, 2193125), (11, 1993750), (22, 996875), (25, 877250), (29, 756250), (50, 438625), (55, 398750), (58, 378125), (110, 199375), (121, 181250), (125, 175450), (145, 151250), (242, 90625), (250, 87725), (275, 79750), (290, 75625), (319, 68750), (550, 39875), (605, 36250), (625, 35090), (638, 34375), (725, 30250), (1210, 18125), (1250, 17545), (1375, 15950), (1450, 15125), (1595, 13750), (2750, 7975), (3025, 7250), (3125, 7018), (3190, 6875), (3509, 6250), (3625, 6050)]