21099001

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2713}}^1$

素因数の和:2832

約数の個数: 16

約数和(自身を含む): 26575488

約数和(自身を除く): 5476487

約数列:

[1, 7, 11, 77, 101, 707, 1111, 2713, 7777, 18991, 29843, 208901, 274013, 1918091, 3014143, 21099001]

約数ペア:

[(1, 21099001), (7, 3014143), (11, 1918091), (77, 274013), (101, 208901), (707, 29843), (1111, 18991), (2713, 7777)]