28921815

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{3803}}^1$

素因数の和:3840

約数の個数: 36

約数和(自身を含む): 54298296

約数和(自身を除く): 25376481

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 169, 195, 507, 585, 845, 1521, 2535, 3803, 7605, 11409, 19015, 34227, 49439, 57045, 148317, 171135, 247195, 444951, 642707, 741585, 1928121, 2224755, 3213535, 5784363, 9640605, 28921815]

約数ペア:

[(1, 28921815), (3, 9640605), (5, 5784363), (9, 3213535), (13, 2224755), (15, 1928121), (39, 741585), (45, 642707), (65, 444951), (117, 247195), (169, 171135), (195, 148317), (507, 57045), (585, 49439), (845, 34227), (1521, 19015), (2535, 11409), (3803, 7605)]