21206773

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1$

素因数の和:616

約数の個数: 16

約数和(自身を含む): 24893440

約数和(自身を除く): 3686667

約数列:

[1, 7, 67, 103, 439, 469, 721, 3073, 6901, 29413, 45217, 48307, 205891, 316519, 3029539, 21206773]

約数ペア:

[(1, 21206773), (7, 3029539), (67, 316519), (103, 205891), (439, 48307), (469, 45217), (721, 29413), (3073, 6901)]