21691255

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{5569}}^1$

素因数の和:5634

約数の個数: 16

約数和(自身を含む): 28072800

約数和(自身を除く): 6381545

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 5569, 27845, 105811, 228329, 529055, 1141645, 4338251, 21691255]

約数ペア:

[(1, 21691255), (5, 4338251), (19, 1141645), (41, 529055), (95, 228329), (205, 105811), (779, 27845), (3895, 5569)]