18157005

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 33561216

約数和(自身を除く): 15404211

約数列:

[1, 3, 5, 9, 15, 23, 45, 53, 69, 115, 159, 207, 265, 331, 345, 477, 795, 993, 1035, 1219, 1655, 2385, 2979, 3657, 4965, 6095, 7613, 10971, 14895, 17543, 18285, 22839, 38065, 52629, 54855, 68517, 87715, 114195, 157887, 263145, 342585, 403489, 789435, 1210467, 2017445, 3631401, 6052335, 18157005]

約数ペア:

[(1, 18157005), (3, 6052335), (5, 3631401), (9, 2017445), (15, 1210467), (23, 789435), (45, 403489), (53, 342585), (69, 263145), (115, 157887), (159, 114195), (207, 87715), (265, 68517), (331, 54855), (345, 52629), (477, 38065), (795, 22839), (993, 18285), (1035, 17543), (1219, 14895), (1655, 10971), (2385, 7613), (2979, 6095), (3657, 4965)]