28213270

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{503}}^1$

素因数の和:660

約数の個数: 32

約数和(自身を含む): 52254720

約数和(自身を除く): 24041450

約数列:

[1, 2, 5, 10, 71, 79, 142, 158, 355, 395, 503, 710, 790, 1006, 2515, 5030, 5609, 11218, 28045, 35713, 39737, 56090, 71426, 79474, 178565, 198685, 357130, 397370, 2821327, 5642654, 14106635, 28213270]

約数ペア:

[(1, 28213270), (2, 14106635), (5, 5642654), (10, 2821327), (71, 397370), (79, 357130), (142, 198685), (158, 178565), (355, 79474), (395, 71426), (503, 56090), (710, 39737), (790, 35713), (1006, 28045), (2515, 11218), (5030, 5609)]