19181421

素因数分解:

$3^3\times 7^1\times {\mathrm{101489}}^1$

素因数の和:101505

約数の個数: 16

約数和(自身を含む): 32476800

約数和(自身を除く): 13295379

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 101489, 304467, 710423, 913401, 2131269, 2740203, 6393807, 19181421]

約数ペア:

[(1, 19181421), (3, 6393807), (7, 2740203), (9, 2131269), (21, 913401), (27, 710423), (63, 304467), (189, 101489)]