18727947

素因数分解:

$3^2\times 7^2\times {\mathrm{42467}}^1$

素因数の和:42487

約数の個数: 18

約数和(自身を含む): 31468788

約数和(自身を除く): 12740841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 42467, 127401, 297269, 382203, 891807, 2080883, 2675421, 6242649, 18727947]

約数ペア:

[(1, 18727947), (3, 6242649), (7, 2675421), (9, 2080883), (21, 891807), (49, 382203), (63, 297269), (147, 127401), (441, 42467)]