28135760

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8179}}^1$

素因数の和:8235

約数の個数: 40

約数和(自身を含む): 66945120

約数和(自身を除く): 38809360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 8179, 16358, 32716, 40895, 65432, 81790, 130864, 163580, 327160, 351697, 654320, 703394, 1406788, 1758485, 2813576, 3516970, 5627152, 7033940, 14067880, 28135760]

約数ペア:

[(1, 28135760), (2, 14067880), (4, 7033940), (5, 5627152), (8, 3516970), (10, 2813576), (16, 1758485), (20, 1406788), (40, 703394), (43, 654320), (80, 351697), (86, 327160), (172, 163580), (215, 130864), (344, 81790), (430, 65432), (688, 40895), (860, 32716), (1720, 16358), (3440, 8179)]