19993325

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 29462400

約数和(自身を除く): 9469075

約数列:

[1, 5, 11, 23, 25, 29, 55, 109, 115, 145, 253, 275, 319, 545, 575, 667, 725, 1199, 1265, 1595, 2507, 2725, 3161, 3335, 5995, 6325, 7337, 7975, 12535, 15805, 16675, 27577, 29975, 34771, 36685, 62675, 72703, 79025, 137885, 173855, 183425, 363515, 689425, 799733, 869275, 1817575, 3998665, 19993325]

約数ペア:

[(1, 19993325), (5, 3998665), (11, 1817575), (23, 869275), (25, 799733), (29, 689425), (55, 363515), (109, 183425), (115, 173855), (145, 137885), (253, 79025), (275, 72703), (319, 62675), (545, 36685), (575, 34771), (667, 29975), (725, 27577), (1199, 16675), (1265, 15805), (1595, 12535), (2507, 7975), (2725, 7337), (3161, 6325), (3335, 5995)]