201919851

素因数分解:

$3^3\times 7^1\times {\mathrm{499}}^1\times {\mathrm{2141}}^1$

素因数の和:2656

約数の個数: 32

約数和(自身を含む): 342720000

約数和(自身を除く): 140800149

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 499, 1497, 2141, 3493, 4491, 6423, 10479, 13473, 14987, 19269, 31437, 44961, 57807, 94311, 134883, 404649, 1068359, 3205077, 7478513, 9615231, 22435539, 28845693, 67306617, 201919851]

約数ペア:

[(1, 201919851), (3, 67306617), (7, 28845693), (9, 22435539), (21, 9615231), (27, 7478513), (63, 3205077), (189, 1068359), (499, 404649), (1497, 134883), (2141, 94311), (3493, 57807), (4491, 44961), (6423, 31437), (10479, 19269), (13473, 14987)]