21083447

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2711}}^1$

素因数の和:2830

約数の個数: 16

約数和(自身を含む): 26555904

約数和(自身を除く): 5472457

約数列:

[1, 7, 11, 77, 101, 707, 1111, 2711, 7777, 18977, 29821, 208747, 273811, 1916677, 3011921, 21083447]

約数ペア:

[(1, 21083447), (7, 3011921), (11, 1916677), (77, 273811), (101, 208747), (707, 29821), (1111, 18977), (2711, 7777)]