21107005

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5419}}^1$

素因数の和:5484

約数の個数: 16

約数和(自身を含む): 27316800

約数和(自身を除く): 6209795

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 5419, 27095, 102961, 222179, 514805, 1110895, 4221401, 21107005]

約数ペア:

[(1, 21107005), (5, 4221401), (19, 1110895), (41, 514805), (95, 222179), (205, 102961), (779, 27095), (3895, 5419)]