81955580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{5471}}^1$

素因数の和:5594

約数の個数: 48

約数和(自身を含む): 198567936

約数和(自身を除く): 116612356

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1498, 2140, 2996, 3745, 5471, 7490, 10942, 14980, 21884, 27355, 38297, 54710, 76594, 109420, 153188, 191485, 382970, 585397, 765940, 1170794, 2341588, 2926985, 4097779, 5853970, 8195558, 11707940, 16391116, 20488895, 40977790, 81955580]

約数ペア:

[(1, 81955580), (2, 40977790), (4, 20488895), (5, 16391116), (7, 11707940), (10, 8195558), (14, 5853970), (20, 4097779), (28, 2926985), (35, 2341588), (70, 1170794), (107, 765940), (140, 585397), (214, 382970), (428, 191485), (535, 153188), (749, 109420), (1070, 76594), (1498, 54710), (2140, 38297), (2996, 27355), (3745, 21884), (5471, 14980), (7490, 10942)]