19692020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16141}}^1$

素因数の和:16211

約数の個数: 24

約数和(自身を含む): 42033768

約数和(自身を除く): 22341748

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16141, 32282, 64564, 80705, 161410, 322820, 984601, 1969202, 3938404, 4923005, 9846010, 19692020]

約数ペア:

[(1, 19692020), (2, 9846010), (4, 4923005), (5, 3938404), (10, 1969202), (20, 984601), (61, 322820), (122, 161410), (244, 80705), (305, 64564), (610, 32282), (1220, 16141)]