16913421

素因数分解:

$3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{821}}^1$

素因数の和:946

約数の個数: 32

約数和(自身を含む): 28934400

約数和(自身を除く): 12020979

約数列:

[1, 3, 7, 9, 21, 27, 63, 109, 189, 327, 763, 821, 981, 2289, 2463, 2943, 5747, 6867, 7389, 17241, 20601, 22167, 51723, 89489, 155169, 268467, 626423, 805401, 1879269, 2416203, 5637807, 16913421]

約数ペア:

[(1, 16913421), (3, 5637807), (7, 2416203), (9, 1879269), (21, 805401), (27, 626423), (63, 268467), (109, 155169), (189, 89489), (327, 51723), (763, 22167), (821, 20601), (981, 17241), (2289, 7389), (2463, 6867), (2943, 5747)]