78214780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79811}}^1$

素因数の和:79834

約数の個数: 36

約数和(自身を含む): 191069928

約数和(自身を除く): 112855148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 79811, 159622, 319244, 399055, 558677, 798110, 1117354, 1596220, 2234708, 2793385, 3910739, 5586770, 7821478, 11173540, 15642956, 19553695, 39107390, 78214780]

約数ペア:

[(1, 78214780), (2, 39107390), (4, 19553695), (5, 15642956), (7, 11173540), (10, 7821478), (14, 5586770), (20, 3910739), (28, 2793385), (35, 2234708), (49, 1596220), (70, 1117354), (98, 798110), (140, 558677), (196, 399055), (245, 319244), (490, 159622), (980, 79811)]