2019152020

素因数分解:

$2^2\times 5^1\times {\mathrm{3989}}^1\times {\mathrm{25309}}^1$

素因数の和:29307

約数の個数: 24

約数和(自身を含む): 4241449800

約数和(自身を除く): 2222297780

約数列:

[1, 2, 4, 5, 10, 20, 3989, 7978, 15956, 19945, 25309, 39890, 50618, 79780, 101236, 126545, 253090, 506180, 100957601, 201915202, 403830404, 504788005, 1009576010, 2019152020]

約数ペア:

[(1, 2019152020), (2, 1009576010), (4, 504788005), (5, 403830404), (10, 201915202), (20, 100957601), (3989, 506180), (7978, 253090), (15956, 126545), (19945, 101236), (25309, 79780), (39890, 50618)]