18774160

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2153}}^1$

素因数の和:2275

約数の個数: 40

約数和(自身を含む): 44070840

約数和(自身を除く): 25296680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2153, 2180, 4306, 4360, 8612, 8720, 10765, 17224, 21530, 34448, 43060, 86120, 172240, 234677, 469354, 938708, 1173385, 1877416, 2346770, 3754832, 4693540, 9387080, 18774160]

約数ペア:

[(1, 18774160), (2, 9387080), (4, 4693540), (5, 3754832), (8, 2346770), (10, 1877416), (16, 1173385), (20, 938708), (40, 469354), (80, 234677), (109, 172240), (218, 86120), (436, 43060), (545, 34448), (872, 21530), (1090, 17224), (1744, 10765), (2153, 8720), (2180, 8612), (4306, 4360)]