18943540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12301}}^1$

素因数の和:12328

約数の個数: 48

約数和(自身を含む): 49601664

約数和(自身を除く): 30658124

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12301, 24602, 49204, 61505, 86107, 123010, 135311, 172214, 246020, 270622, 344428, 430535, 541244, 676555, 861070, 947177, 1353110, 1722140, 1894354, 2706220, 3788708, 4735885, 9471770, 18943540]

約数ペア:

[(1, 18943540), (2, 9471770), (4, 4735885), (5, 3788708), (7, 2706220), (10, 1894354), (11, 1722140), (14, 1353110), (20, 947177), (22, 861070), (28, 676555), (35, 541244), (44, 430535), (55, 344428), (70, 270622), (77, 246020), (110, 172214), (140, 135311), (154, 123010), (220, 86107), (308, 61505), (385, 49204), (770, 24602), (1540, 12301)]