28489815

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 51644736

約数和(自身を除く): 23154921

約数列:

[1, 3, 5, 9, 15, 37, 45, 71, 111, 185, 213, 241, 333, 355, 555, 639, 723, 1065, 1205, 1665, 2169, 2627, 3195, 3615, 7881, 8917, 10845, 13135, 17111, 23643, 26751, 39405, 44585, 51333, 80253, 85555, 118215, 133755, 153999, 256665, 401265, 633107, 769995, 1899321, 3165535, 5697963, 9496605, 28489815]

約数ペア:

[(1, 28489815), (3, 9496605), (5, 5697963), (9, 3165535), (15, 1899321), (37, 769995), (45, 633107), (71, 401265), (111, 256665), (185, 153999), (213, 133755), (241, 118215), (333, 85555), (355, 80253), (555, 51333), (639, 44585), (723, 39405), (1065, 26751), (1205, 23643), (1665, 17111), (2169, 13135), (2627, 10845), (3195, 8917), (3615, 7881)]