20154278

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^2$

素因数の和:240

約数の個数: 24

約数和(自身を含む): 32158656

約数和(自身を除く): 12004378

約数列:

[1, 2, 31, 61, 62, 73, 122, 146, 1891, 2263, 3782, 4453, 4526, 5329, 8906, 10658, 138043, 165199, 276086, 325069, 330398, 650138, 10077139, 20154278]

約数ペア:

[(1, 20154278), (2, 10077139), (31, 650138), (61, 330398), (62, 325069), (73, 276086), (122, 165199), (146, 138043), (1891, 10658), (2263, 8906), (3782, 5329), (4453, 4526)]