19497940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1151}}^1$

素因数の和:1189

約数の個数: 72

約数和(自身を含む): 51480576

約数和(自身を除く): 31982636

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1151, 1210, 1540, 1694, 2302, 2420, 3388, 4235, 4604, 5755, 8057, 8470, 11510, 12661, 16114, 16940, 23020, 25322, 32228, 40285, 50644, 63305, 80570, 88627, 126610, 139271, 161140, 177254, 253220, 278542, 354508, 443135, 557084, 696355, 886270, 974897, 1392710, 1772540, 1949794, 2785420, 3899588, 4874485, 9748970, 19497940]

約数ペア:

[(1, 19497940), (2, 9748970), (4, 4874485), (5, 3899588), (7, 2785420), (10, 1949794), (11, 1772540), (14, 1392710), (20, 974897), (22, 886270), (28, 696355), (35, 557084), (44, 443135), (55, 354508), (70, 278542), (77, 253220), (110, 177254), (121, 161140), (140, 139271), (154, 126610), (220, 88627), (242, 80570), (308, 63305), (385, 50644), (484, 40285), (605, 32228), (770, 25322), (847, 23020), (1151, 16940), (1210, 16114), (1540, 12661), (1694, 11510), (2302, 8470), (2420, 8057), (3388, 5755), (4235, 4604)]