19315989

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:212

約数の個数: 80

約数和(自身を含む): 38100480

約数和(自身を除く): 18784491

約数列:

[1, 3, 7, 9, 11, 19, 21, 27, 33, 57, 63, 77, 81, 99, 133, 163, 171, 189, 209, 231, 297, 399, 489, 513, 567, 627, 693, 891, 1141, 1197, 1463, 1467, 1539, 1793, 1881, 2079, 3097, 3423, 3591, 4389, 4401, 5379, 5643, 6237, 9291, 10269, 10773, 12551, 13167, 13203, 16137, 16929, 21679, 27873, 30807, 34067, 37653, 39501, 48411, 65037, 83619, 92421, 102201, 112959, 118503, 145233, 195111, 238469, 250857, 306603, 338877, 585333, 715407, 919809, 1016631, 1755999, 2146221, 2759427, 6438663, 19315989]

約数ペア:

[(1, 19315989), (3, 6438663), (7, 2759427), (9, 2146221), (11, 1755999), (19, 1016631), (21, 919809), (27, 715407), (33, 585333), (57, 338877), (63, 306603), (77, 250857), (81, 238469), (99, 195111), (133, 145233), (163, 118503), (171, 112959), (189, 102201), (209, 92421), (231, 83619), (297, 65037), (399, 48411), (489, 39501), (513, 37653), (567, 34067), (627, 30807), (693, 27873), (891, 21679), (1141, 16929), (1197, 16137), (1463, 13203), (1467, 13167), (1539, 12551), (1793, 10773), (1881, 10269), (2079, 9291), (3097, 6237), (3423, 5643), (3591, 5379), (4389, 4401)]