18417760

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2677}}^1$

素因数の和:2735

約数の個数: 48

約数和(自身を含む): 44540496

約数和(自身を除く): 26122736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2677, 3440, 5354, 6880, 10708, 13385, 21416, 26770, 42832, 53540, 85664, 107080, 115111, 214160, 230222, 428320, 460444, 575555, 920888, 1151110, 1841776, 2302220, 3683552, 4604440, 9208880, 18417760]

約数ペア:

[(1, 18417760), (2, 9208880), (4, 4604440), (5, 3683552), (8, 2302220), (10, 1841776), (16, 1151110), (20, 920888), (32, 575555), (40, 460444), (43, 428320), (80, 230222), (86, 214160), (160, 115111), (172, 107080), (215, 85664), (344, 53540), (430, 42832), (688, 26770), (860, 21416), (1376, 13385), (1720, 10708), (2677, 6880), (3440, 5354)]