16878687

素因数分解:

$3^1\times 7^3\times {\mathrm{47}}^1\times {\mathrm{349}}^1$

素因数の和:420

約数の個数: 32

約数和(自身を含む): 26880000

約数和(自身を除く): 10001313

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 343, 349, 987, 1029, 1047, 2303, 2443, 6909, 7329, 16121, 16403, 17101, 48363, 49209, 51303, 114821, 119707, 344463, 359121, 803747, 2411241, 5626229, 16878687]

約数ペア:

[(1, 16878687), (3, 5626229), (7, 2411241), (21, 803747), (47, 359121), (49, 344463), (141, 119707), (147, 114821), (329, 51303), (343, 49209), (349, 48363), (987, 17101), (1029, 16403), (1047, 16121), (2303, 7329), (2443, 6909)]