21710440

素因数分解:

$2^3\times 5^1\times {\mathrm{542761}}^1$

素因数の和:542772

約数の個数: 16

約数和(自身を含む): 48848580

約数和(自身を除く): 27138140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542761, 1085522, 2171044, 2713805, 4342088, 5427610, 10855220, 21710440]

約数ペア:

[(1, 21710440), (2, 10855220), (4, 5427610), (5, 4342088), (8, 2713805), (10, 2171044), (20, 1085522), (40, 542761)]