15983860

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1993}}^1$

素因数の和:2403

約数の個数: 24

約数和(自身を含む): 33666696

約数和(自身を除く): 17682836

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 1993, 2005, 3986, 4010, 7972, 8020, 9965, 19930, 39860, 799193, 1598386, 3196772, 3995965, 7991930, 15983860]

約数ペア:

[(1, 15983860), (2, 7991930), (4, 3995965), (5, 3196772), (10, 1598386), (20, 799193), (401, 39860), (802, 19930), (1604, 9965), (1993, 8020), (2005, 7972), (3986, 4010)]