18828621

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{5639}}^1$

素因数の和:5705

約数の個数: 24

約数和(自身を含む): 31674240

約数和(自身を除く): 12845619

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 5639, 16917, 39473, 50751, 118419, 298867, 355257, 896601, 2092069, 2689803, 6276207, 18828621]

約数ペア:

[(1, 18828621), (3, 6276207), (7, 2689803), (9, 2092069), (21, 896601), (53, 355257), (63, 298867), (159, 118419), (371, 50751), (477, 39473), (1113, 16917), (3339, 5639)]