21409860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{356831}}^1$

素因数の和:356843

約数の個数: 24

約数和(自身を含む): 59947776

約数和(自身を除く): 38537916

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 356831, 713662, 1070493, 1427324, 1784155, 2140986, 3568310, 4281972, 5352465, 7136620, 10704930, 21409860]

約数ペア:

[(1, 21409860), (2, 10704930), (3, 7136620), (4, 5352465), (5, 4281972), (6, 3568310), (10, 2140986), (12, 1784155), (15, 1427324), (20, 1070493), (30, 713662), (60, 356831)]