28280745

素因数分解:

$3^4\times 5^1\times {\mathrm{69829}}^1$

素因数の和:69846

約数の個数: 20

約数和(自身を含む): 50696580

約数和(自身を除く): 22415835

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 69829, 209487, 349145, 628461, 1047435, 1885383, 3142305, 5656149, 9426915, 28280745]

約数ペア:

[(1, 28280745), (3, 9426915), (5, 5656149), (9, 3142305), (15, 1885383), (27, 1047435), (45, 628461), (81, 349145), (135, 209487), (405, 69829)]