123960280

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{15731}}^1$

素因数の和:15939

約数の個数: 32

約数和(自身を含む): 280344240

約数和(自身を除く): 156383960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 15731, 31462, 62924, 78655, 125848, 157310, 314620, 629240, 3099007, 6198014, 12396028, 15495035, 24792056, 30990070, 61980140, 123960280]

約数ペア:

[(1, 123960280), (2, 61980140), (4, 30990070), (5, 24792056), (8, 15495035), (10, 12396028), (20, 6198014), (40, 3099007), (197, 629240), (394, 314620), (788, 157310), (985, 125848), (1576, 78655), (1970, 62924), (3940, 31462), (7880, 15731)]