19800340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{233}}^1\times {\mathrm{607}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 47803392

約数和(自身を除く): 28003052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 233, 466, 607, 932, 1165, 1214, 1631, 2330, 2428, 3035, 3262, 4249, 4660, 6070, 6524, 8155, 8498, 12140, 16310, 16996, 21245, 32620, 42490, 84980, 141431, 282862, 565724, 707155, 990017, 1414310, 1980034, 2828620, 3960068, 4950085, 9900170, 19800340]

約数ペア:

[(1, 19800340), (2, 9900170), (4, 4950085), (5, 3960068), (7, 2828620), (10, 1980034), (14, 1414310), (20, 990017), (28, 707155), (35, 565724), (70, 282862), (140, 141431), (233, 84980), (466, 42490), (607, 32620), (932, 21245), (1165, 16996), (1214, 16310), (1631, 12140), (2330, 8498), (2428, 8155), (3035, 6524), (3262, 6070), (4249, 4660)]