64723960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1663}}^1$

素因数の和:1820

約数の個数: 64

約数和(自身を含む): 167731200

約数和(自身を除く): 103007240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 973, 1112, 1390, 1663, 1946, 2780, 3326, 3892, 4865, 5560, 6652, 7784, 8315, 9730, 11641, 13304, 16630, 19460, 23282, 33260, 38920, 46564, 58205, 66520, 93128, 116410, 231157, 232820, 462314, 465640, 924628, 1155785, 1618099, 1849256, 2311570, 3236198, 4623140, 6472396, 8090495, 9246280, 12944792, 16180990, 32361980, 64723960]

約数ペア:

[(1, 64723960), (2, 32361980), (4, 16180990), (5, 12944792), (7, 9246280), (8, 8090495), (10, 6472396), (14, 4623140), (20, 3236198), (28, 2311570), (35, 1849256), (40, 1618099), (56, 1155785), (70, 924628), (139, 465640), (140, 462314), (278, 232820), (280, 231157), (556, 116410), (695, 93128), (973, 66520), (1112, 58205), (1390, 46564), (1663, 38920), (1946, 33260), (2780, 23282), (3326, 19460), (3892, 16630), (4865, 13304), (5560, 11641), (6652, 9730), (7784, 8315)]