21928120

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1871}}^1$

素因数の和:2175

約数の個数: 32

約数和(自身を含む): 49533120

約数和(自身を除く): 27605000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 1871, 2344, 2930, 3742, 5860, 7484, 9355, 11720, 14968, 18710, 37420, 74840, 548203, 1096406, 2192812, 2741015, 4385624, 5482030, 10964060, 21928120]

約数ペア:

[(1, 21928120), (2, 10964060), (4, 5482030), (5, 4385624), (8, 2741015), (10, 2192812), (20, 1096406), (40, 548203), (293, 74840), (586, 37420), (1172, 18710), (1465, 14968), (1871, 11720), (2344, 9355), (2930, 7484), (3742, 5860)]