28003580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127289}}^1$

素因数の和:127309

約数の個数: 24

約数和(自身を含む): 64154160

約数和(自身を除く): 36150580

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 127289, 254578, 509156, 636445, 1272890, 1400179, 2545780, 2800358, 5600716, 7000895, 14001790, 28003580]

約数ペア:

[(1, 28003580), (2, 14001790), (4, 7000895), (5, 5600716), (10, 2800358), (11, 2545780), (20, 1400179), (22, 1272890), (44, 636445), (55, 509156), (110, 254578), (220, 127289)]