13021700

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{661}}^1$

素因数の和:872

約数の個数: 36

約数和(自身を含む): 28443492

約数和(自身を除く): 15421792

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 661, 788, 985, 1322, 1970, 2644, 3305, 3940, 4925, 6610, 9850, 13220, 16525, 19700, 33050, 66100, 130217, 260434, 520868, 651085, 1302170, 2604340, 3255425, 6510850, 13021700]

約数ペア:

[(1, 13021700), (2, 6510850), (4, 3255425), (5, 2604340), (10, 1302170), (20, 651085), (25, 520868), (50, 260434), (100, 130217), (197, 66100), (394, 33050), (661, 19700), (788, 16525), (985, 13220), (1322, 9850), (1970, 6610), (2644, 4925), (3305, 3940)]