19990071

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:481

約数の個数: 40

約数和(自身を含む): 32524800

約数和(自身を除く): 12534729

約数列:

[1, 3, 9, 19, 27, 31, 57, 81, 93, 171, 279, 419, 513, 589, 837, 1257, 1539, 1767, 2511, 3771, 5301, 7961, 11313, 12989, 15903, 23883, 33939, 38967, 47709, 71649, 116901, 214947, 246791, 350703, 644841, 740373, 1052109, 2221119, 6663357, 19990071]

約数ペア:

[(1, 19990071), (3, 6663357), (9, 2221119), (19, 1052109), (27, 740373), (31, 644841), (57, 350703), (81, 246791), (93, 214947), (171, 116901), (279, 71649), (419, 47709), (513, 38967), (589, 33939), (837, 23883), (1257, 15903), (1539, 12989), (1767, 11313), (2511, 7961), (3771, 5301)]