21690135

素因数分解:

$3^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2663}}^1$

素因数の和:2855

約数の個数: 24

約数和(自身を含む): 37818144

約数和(自身を除く): 16128009

約数列:

[1, 3, 5, 9, 15, 45, 181, 543, 905, 1629, 2663, 2715, 7989, 8145, 13315, 23967, 39945, 119835, 482003, 1446009, 2410015, 4338027, 7230045, 21690135]

約数ペア:

[(1, 21690135), (3, 7230045), (5, 4338027), (9, 2410015), (15, 1446009), (45, 482003), (181, 119835), (543, 39945), (905, 23967), (1629, 13315), (2663, 8145), (2715, 7989)]