21107152

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2789}}^1$

素因数の和:2851

約数の個数: 40

約数和(自身を含む): 45666720

約数和(自身を除く): 24559568

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1892, 2789, 3784, 5578, 7568, 11156, 22312, 30679, 44624, 61358, 119927, 122716, 239854, 245432, 479708, 490864, 959416, 1319197, 1918832, 2638394, 5276788, 10553576, 21107152]

約数ペア:

[(1, 21107152), (2, 10553576), (4, 5276788), (8, 2638394), (11, 1918832), (16, 1319197), (22, 959416), (43, 490864), (44, 479708), (86, 245432), (88, 239854), (172, 122716), (176, 119927), (344, 61358), (473, 44624), (688, 30679), (946, 22312), (1892, 11156), (2789, 7568), (3784, 5578)]