28916385

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{421}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 49019520

約数和(自身を除く): 20103135

約数列:

[1, 3, 5, 15, 19, 57, 95, 241, 285, 421, 723, 1205, 1263, 2105, 3615, 4579, 6315, 7999, 13737, 22895, 23997, 39995, 68685, 101461, 119985, 304383, 507305, 1521915, 1927759, 5783277, 9638795, 28916385]

約数ペア:

[(1, 28916385), (3, 9638795), (5, 5783277), (15, 1927759), (19, 1521915), (57, 507305), (95, 304383), (241, 119985), (285, 101461), (421, 68685), (723, 39995), (1205, 23997), (1263, 22895), (2105, 13737), (3615, 7999), (4579, 6315)]