20690220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{419}}^1\times {\mathrm{823}}^1$

素因数の和:1254

約数の個数: 48

約数和(自身を含む): 58141440

約数和(自身を除く): 37451220

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 419, 823, 838, 1257, 1646, 1676, 2095, 2469, 2514, 3292, 4115, 4190, 4938, 5028, 6285, 8230, 8380, 9876, 12345, 12570, 16460, 24690, 25140, 49380, 344837, 689674, 1034511, 1379348, 1724185, 2069022, 3448370, 4138044, 5172555, 6896740, 10345110, 20690220]

約数ペア:

[(1, 20690220), (2, 10345110), (3, 6896740), (4, 5172555), (5, 4138044), (6, 3448370), (10, 2069022), (12, 1724185), (15, 1379348), (20, 1034511), (30, 689674), (60, 344837), (419, 49380), (823, 25140), (838, 24690), (1257, 16460), (1646, 12570), (1676, 12345), (2095, 9876), (2469, 8380), (2514, 8230), (3292, 6285), (4115, 5028), (4190, 4938)]