19797981

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{59}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 33446400

約数和(自身を除く): 13648419

約数列:

[1, 3, 7, 19, 21, 29, 57, 59, 87, 133, 177, 203, 399, 413, 551, 609, 841, 1121, 1239, 1653, 1711, 2523, 3363, 3857, 5133, 5887, 7847, 11571, 11977, 15979, 17661, 23541, 32509, 35931, 47937, 49619, 97527, 111853, 148857, 227563, 335559, 347333, 682689, 942761, 1041999, 2828283, 6599327, 19797981]

約数ペア:

[(1, 19797981), (3, 6599327), (7, 2828283), (19, 1041999), (21, 942761), (29, 682689), (57, 347333), (59, 335559), (87, 227563), (133, 148857), (177, 111853), (203, 97527), (399, 49619), (413, 47937), (551, 35931), (609, 32509), (841, 23541), (1121, 17661), (1239, 15979), (1653, 11977), (1711, 11571), (2523, 7847), (3363, 5887), (3857, 5133)]