21010191

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{991}}^1$

素因数の和:1222

約数の個数: 16

約数和(自身を含む): 28950528

約数和(自身を除く): 7940337

約数列:

[1, 3, 37, 111, 191, 573, 991, 2973, 7067, 21201, 36667, 110001, 189281, 567843, 7003397, 21010191]

約数ペア:

[(1, 21010191), (3, 7003397), (37, 567843), (111, 189281), (191, 110001), (573, 36667), (991, 21201), (2973, 7067)]