19026640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5531}}^1$

素因数の和:5587

約数の個数: 40

約数和(自身を含む): 45273888

約数和(自身を除く): 26247248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 5531, 11062, 22124, 27655, 44248, 55310, 88496, 110620, 221240, 237833, 442480, 475666, 951332, 1189165, 1902664, 2378330, 3805328, 4756660, 9513320, 19026640]

約数ペア:

[(1, 19026640), (2, 9513320), (4, 4756660), (5, 3805328), (8, 2378330), (10, 1902664), (16, 1189165), (20, 951332), (40, 475666), (43, 442480), (80, 237833), (86, 221240), (172, 110620), (215, 88496), (344, 55310), (430, 44248), (688, 27655), (860, 22124), (1720, 11062), (3440, 5531)]