21610900

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{1097}}^1$

素因数の和:1308

約数の個数: 36

約数和(自身を含む): 47176668

約数和(自身を除く): 25565768

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 788, 985, 1097, 1970, 2194, 3940, 4388, 4925, 5485, 9850, 10970, 19700, 21940, 27425, 54850, 109700, 216109, 432218, 864436, 1080545, 2161090, 4322180, 5402725, 10805450, 21610900]

約数ペア:

[(1, 21610900), (2, 10805450), (4, 5402725), (5, 4322180), (10, 2161090), (20, 1080545), (25, 864436), (50, 432218), (100, 216109), (197, 109700), (394, 54850), (788, 27425), (985, 21940), (1097, 19700), (1970, 10970), (2194, 9850), (3940, 5485), (4388, 4925)]