20213739

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{433}}^1$

素因数の和:481

約数の個数: 64

約数和(自身を含む): 38886400

約数和(自身を除く): 18672661

約数列:

[1, 3, 7, 9, 13, 19, 21, 27, 39, 57, 63, 91, 117, 133, 171, 189, 247, 273, 351, 399, 433, 513, 741, 819, 1197, 1299, 1729, 2223, 2457, 3031, 3591, 3897, 5187, 5629, 6669, 8227, 9093, 11691, 15561, 16887, 24681, 27279, 39403, 46683, 50661, 57589, 74043, 81837, 106951, 118209, 151983, 172767, 222129, 320853, 354627, 518301, 748657, 962559, 1063881, 1554903, 2245971, 2887677, 6737913, 20213739]

約数ペア:

[(1, 20213739), (3, 6737913), (7, 2887677), (9, 2245971), (13, 1554903), (19, 1063881), (21, 962559), (27, 748657), (39, 518301), (57, 354627), (63, 320853), (91, 222129), (117, 172767), (133, 151983), (171, 118209), (189, 106951), (247, 81837), (273, 74043), (351, 57589), (399, 50661), (433, 46683), (513, 39403), (741, 27279), (819, 24681), (1197, 16887), (1299, 15561), (1729, 11691), (2223, 9093), (2457, 8227), (3031, 6669), (3591, 5629), (3897, 5187)]