18405855

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 34909056

約数和(自身を除く): 16503201

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 73, 117, 195, 219, 365, 431, 585, 657, 949, 1095, 1293, 2155, 2847, 3285, 3879, 4745, 5603, 6465, 8541, 14235, 16809, 19395, 28015, 31463, 42705, 50427, 84045, 94389, 157315, 252135, 283167, 409019, 471945, 1227057, 1415835, 2045095, 3681171, 6135285, 18405855]

約数ペア:

[(1, 18405855), (3, 6135285), (5, 3681171), (9, 2045095), (13, 1415835), (15, 1227057), (39, 471945), (45, 409019), (65, 283167), (73, 252135), (117, 157315), (195, 94389), (219, 84045), (365, 50427), (431, 42705), (585, 31463), (657, 28015), (949, 19395), (1095, 16809), (1293, 14235), (2155, 8541), (2847, 6465), (3285, 5603), (3879, 4745)]