18725984

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{439}}^1$

素因数の和:523

約数の個数: 48

約数和(自身を含む): 39029760

約数和(自身を除く): 20303776

約数列:

[1, 2, 4, 8, 16, 31, 32, 43, 62, 86, 124, 172, 248, 344, 439, 496, 688, 878, 992, 1333, 1376, 1756, 2666, 3512, 5332, 7024, 10664, 13609, 14048, 18877, 21328, 27218, 37754, 42656, 54436, 75508, 108872, 151016, 217744, 302032, 435488, 585187, 604064, 1170374, 2340748, 4681496, 9362992, 18725984]

約数ペア:

[(1, 18725984), (2, 9362992), (4, 4681496), (8, 2340748), (16, 1170374), (31, 604064), (32, 585187), (43, 435488), (62, 302032), (86, 217744), (124, 151016), (172, 108872), (248, 75508), (344, 54436), (439, 42656), (496, 37754), (688, 27218), (878, 21328), (992, 18877), (1333, 14048), (1376, 13609), (1756, 10664), (2666, 7024), (3512, 5332)]