19672065

素因数分解:

$3^7\times 5^1\times 7^1\times {\mathrm{257}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 40619520

約数和(自身を除く): 20947455

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 257, 315, 405, 567, 729, 771, 945, 1215, 1285, 1701, 1799, 2187, 2313, 2835, 3645, 3855, 5103, 5397, 6939, 8505, 8995, 10935, 11565, 15309, 16191, 20817, 25515, 26985, 34695, 48573, 62451, 76545, 80955, 104085, 145719, 187353, 242865, 312255, 437157, 562059, 728595, 936765, 1311471, 2185785, 2810295, 3934413, 6557355, 19672065]

約数ペア:

[(1, 19672065), (3, 6557355), (5, 3934413), (7, 2810295), (9, 2185785), (15, 1311471), (21, 936765), (27, 728595), (35, 562059), (45, 437157), (63, 312255), (81, 242865), (105, 187353), (135, 145719), (189, 104085), (243, 80955), (257, 76545), (315, 62451), (405, 48573), (567, 34695), (729, 26985), (771, 25515), (945, 20817), (1215, 16191), (1285, 15309), (1701, 11565), (1799, 10935), (2187, 8995), (2313, 8505), (2835, 6939), (3645, 5397), (3855, 5103)]