20079580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{997}}^1$

素因数の和:1078

約数の個数: 48

約数和(自身を含む): 45269280

約数和(自身を除く): 25189700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 190, 212, 265, 380, 530, 997, 1007, 1060, 1994, 2014, 3988, 4028, 4985, 5035, 9970, 10070, 18943, 19940, 20140, 37886, 52841, 75772, 94715, 105682, 189430, 211364, 264205, 378860, 528410, 1003979, 1056820, 2007958, 4015916, 5019895, 10039790, 20079580]

約数ペア:

[(1, 20079580), (2, 10039790), (4, 5019895), (5, 4015916), (10, 2007958), (19, 1056820), (20, 1003979), (38, 528410), (53, 378860), (76, 264205), (95, 211364), (106, 189430), (190, 105682), (212, 94715), (265, 75772), (380, 52841), (530, 37886), (997, 20140), (1007, 19940), (1060, 18943), (1994, 10070), (2014, 9970), (3988, 5035), (4028, 4985)]