19857393

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{3659}}^1$

素因数の和:3738

約数の個数: 20

約数和(自身を含む): 30114480

約数和(自身を除く): 10257087

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 3659, 5427, 10977, 32931, 98793, 245153, 296379, 735459, 2206377, 6619131, 19857393]

約数ペア:

[(1, 19857393), (3, 6619131), (9, 2206377), (27, 735459), (67, 296379), (81, 245153), (201, 98793), (603, 32931), (1809, 10977), (3659, 5427)]