78891820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{5471}}^1$

素因数の和:5590

約数の個数: 48

約数和(自身を含む): 191213568

約数和(自身を除く): 112321748

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1442, 2060, 2884, 3605, 5471, 7210, 10942, 14420, 21884, 27355, 38297, 54710, 76594, 109420, 153188, 191485, 382970, 563513, 765940, 1127026, 2254052, 2817565, 3944591, 5635130, 7889182, 11270260, 15778364, 19722955, 39445910, 78891820]

約数ペア:

[(1, 78891820), (2, 39445910), (4, 19722955), (5, 15778364), (7, 11270260), (10, 7889182), (14, 5635130), (20, 3944591), (28, 2817565), (35, 2254052), (70, 1127026), (103, 765940), (140, 563513), (206, 382970), (412, 191485), (515, 153188), (721, 109420), (1030, 76594), (1442, 54710), (2060, 38297), (2884, 27355), (3605, 21884), (5471, 14420), (7210, 10942)]