168209890

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{154321}}^1$

素因数の和:154437

約数の個数: 16

約数和(自身を含む): 305557560

約数和(自身を除く): 137347670

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 154321, 308642, 771605, 1543210, 16820989, 33641978, 84104945, 168209890]

約数ペア:

[(1, 168209890), (2, 84104945), (5, 33641978), (10, 16820989), (109, 1543210), (218, 771605), (545, 308642), (1090, 154321)]