18141700

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{4219}}^1$

素因数の和:4276

約数の個数: 36

約数和(自身を含む): 40292560

約数和(自身を除く): 22150860

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 1075, 2150, 4219, 4300, 8438, 16876, 21095, 42190, 84380, 105475, 181417, 210950, 362834, 421900, 725668, 907085, 1814170, 3628340, 4535425, 9070850, 18141700]

約数ペア:

[(1, 18141700), (2, 9070850), (4, 4535425), (5, 3628340), (10, 1814170), (20, 907085), (25, 725668), (43, 421900), (50, 362834), (86, 210950), (100, 181417), (172, 105475), (215, 84380), (430, 42190), (860, 21095), (1075, 16876), (2150, 8438), (4219, 4300)]