201326900

素因数分解:

$2^2\times 5^2\times {\mathrm{89}}^1\times {\mathrm{22621}}^1$

素因数の和:22724

約数の個数: 36

約数和(自身を含む): 441807660

約数和(自身を除く): 240480760

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 89, 100, 178, 356, 445, 890, 1780, 2225, 4450, 8900, 22621, 45242, 90484, 113105, 226210, 452420, 565525, 1131050, 2013269, 2262100, 4026538, 8053076, 10066345, 20132690, 40265380, 50331725, 100663450, 201326900]

約数ペア:

[(1, 201326900), (2, 100663450), (4, 50331725), (5, 40265380), (10, 20132690), (20, 10066345), (25, 8053076), (50, 4026538), (89, 2262100), (100, 2013269), (178, 1131050), (356, 565525), (445, 452420), (890, 226210), (1780, 113105), (2225, 90484), (4450, 45242), (8900, 22621)]