18821275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{769}}^1$

素因数の和:879

約数の個数: 24

約数和(自身を含む): 25779600

約数和(自身を除く): 6958325

約数列:

[1, 5, 11, 25, 55, 89, 275, 445, 769, 979, 2225, 3845, 4895, 8459, 19225, 24475, 42295, 68441, 211475, 342205, 752851, 1711025, 3764255, 18821275]

約数ペア:

[(1, 18821275), (5, 3764255), (11, 1711025), (25, 752851), (55, 342205), (89, 211475), (275, 68441), (445, 42295), (769, 24475), (979, 19225), (2225, 8459), (3845, 4895)]