78795920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{20101}}^1$

素因数の和:20128

約数の個数: 60

約数和(自身を含む): 213121404

約数和(自身を除く): 134325484

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 20101, 40202, 80404, 100505, 140707, 160808, 201010, 281414, 321616, 402020, 562828, 703535, 804040, 984949, 1125656, 1407070, 1608080, 1969898, 2251312, 2814140, 3939796, 4924745, 5628280, 7879592, 9849490, 11256560, 15759184, 19698980, 39397960, 78795920]

約数ペア:

[(1, 78795920), (2, 39397960), (4, 19698980), (5, 15759184), (7, 11256560), (8, 9849490), (10, 7879592), (14, 5628280), (16, 4924745), (20, 3939796), (28, 2814140), (35, 2251312), (40, 1969898), (49, 1608080), (56, 1407070), (70, 1125656), (80, 984949), (98, 804040), (112, 703535), (140, 562828), (196, 402020), (245, 321616), (280, 281414), (392, 201010), (490, 160808), (560, 140707), (784, 100505), (980, 80404), (1960, 40202), (3920, 20101)]