2021750685

素因数分解:

$3^4\times 5^1\times {\mathrm{4991977}}^1$

素因数の和:4991994

約数の個数: 20

約数和(自身を含む): 3624176028

約数和(自身を除く): 1602425343

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4991977, 14975931, 24959885, 44927793, 74879655, 134783379, 224638965, 404350137, 673916895, 2021750685]

約数ペア:

[(1, 2021750685), (3, 673916895), (5, 404350137), (9, 224638965), (15, 134783379), (27, 74879655), (45, 44927793), (81, 24959885), (135, 14975931), (405, 4991977)]