1964240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:627

約数の個数: 40

約数和(自身を含む): 4681248

約数和(自身を除く): 2717008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 571, 688, 860, 1142, 1720, 2284, 2855, 3440, 4568, 5710, 9136, 11420, 22840, 24553, 45680, 49106, 98212, 122765, 196424, 245530, 392848, 491060, 982120, 1964240]

約数ペア:

[(1, 1964240), (2, 982120), (4, 491060), (5, 392848), (8, 245530), (10, 196424), (16, 122765), (20, 98212), (40, 49106), (43, 45680), (80, 24553), (86, 22840), (172, 11420), (215, 9136), (344, 5710), (430, 4568), (571, 3440), (688, 2855), (860, 2284), (1142, 1720)]