28545111

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 49061376

約数和(自身を除く): 20516265

約数列:

[1, 3, 7, 9, 21, 53, 63, 83, 103, 159, 249, 309, 371, 477, 581, 721, 747, 927, 1113, 1743, 2163, 3339, 4399, 5229, 5459, 6489, 8549, 13197, 16377, 25647, 30793, 38213, 39591, 49131, 59843, 76941, 92379, 114639, 179529, 277137, 343917, 453097, 538587, 1359291, 3171679, 4077873, 9515037, 28545111]

約数ペア:

[(1, 28545111), (3, 9515037), (7, 4077873), (9, 3171679), (21, 1359291), (53, 538587), (63, 453097), (83, 343917), (103, 277137), (159, 179529), (249, 114639), (309, 92379), (371, 76941), (477, 59843), (581, 49131), (721, 39591), (747, 38213), (927, 30793), (1113, 25647), (1743, 16377), (2163, 13197), (3339, 8549), (4399, 6489), (5229, 5459)]