8153740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{419}}^1$

素因数の和:574

約数の個数: 48

約数和(自身を含む): 19756800

約数和(自身を除く): 11603060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 419, 556, 695, 838, 973, 1390, 1676, 1946, 2095, 2780, 2933, 3892, 4190, 4865, 5866, 8380, 9730, 11732, 14665, 19460, 29330, 58241, 58660, 116482, 232964, 291205, 407687, 582410, 815374, 1164820, 1630748, 2038435, 4076870, 8153740]

約数ペア:

[(1, 8153740), (2, 4076870), (4, 2038435), (5, 1630748), (7, 1164820), (10, 815374), (14, 582410), (20, 407687), (28, 291205), (35, 232964), (70, 116482), (139, 58660), (140, 58241), (278, 29330), (419, 19460), (556, 14665), (695, 11732), (838, 9730), (973, 8380), (1390, 5866), (1676, 4865), (1946, 4190), (2095, 3892), (2780, 2933)]