19005921

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{257}}^1$

素因数の和:363

約数の個数: 40

約数和(自身を含む): 31467744

約数和(自身を除く): 12461823

約数列:

[1, 3, 9, 11, 27, 33, 81, 83, 99, 249, 257, 297, 747, 771, 891, 913, 2241, 2313, 2739, 2827, 6723, 6939, 8217, 8481, 20817, 21331, 24651, 25443, 63993, 73953, 76329, 191979, 228987, 234641, 575937, 703923, 1727811, 2111769, 6335307, 19005921]

約数ペア:

[(1, 19005921), (3, 6335307), (9, 2111769), (11, 1727811), (27, 703923), (33, 575937), (81, 234641), (83, 228987), (99, 191979), (249, 76329), (257, 73953), (297, 63993), (747, 25443), (771, 24651), (891, 21331), (913, 20817), (2241, 8481), (2313, 8217), (2739, 6939), (2827, 6723)]