18856556720

素因数分解:

$2^4\times 5^1\times {\mathrm{769}}^1\times {\mathrm{306511}}^1$

素因数の和:307293

約数の個数: 40

約数和(自身を含む): 43898648640

約数和(自身を除く): 25042091920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 769, 1538, 3076, 3845, 6152, 7690, 12304, 15380, 30760, 61520, 306511, 613022, 1226044, 1532555, 2452088, 3065110, 4904176, 6130220, 12260440, 24520880, 235706959, 471413918, 942827836, 1178534795, 1885655672, 2357069590, 3771311344, 4714139180, 9428278360, 18856556720]

約数ペア:

[(1, 18856556720), (2, 9428278360), (4, 4714139180), (5, 3771311344), (8, 2357069590), (10, 1885655672), (16, 1178534795), (20, 942827836), (40, 471413918), (80, 235706959), (769, 24520880), (1538, 12260440), (3076, 6130220), (3845, 4904176), (6152, 3065110), (7690, 2452088), (12304, 1532555), (15380, 1226044), (30760, 613022), (61520, 306511)]