278604

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:190

約数の個数: 36

約数和(自身を含む): 720720

約数和(自身を除く): 442116

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 109, 142, 213, 218, 284, 327, 426, 436, 639, 654, 852, 981, 1278, 1308, 1962, 2556, 3924, 7739, 15478, 23217, 30956, 46434, 69651, 92868, 139302, 278604]

約数ペア:

[(1, 278604), (2, 139302), (3, 92868), (4, 69651), (6, 46434), (9, 30956), (12, 23217), (18, 15478), (36, 7739), (71, 3924), (109, 2556), (142, 1962), (213, 1308), (218, 1278), (284, 981), (327, 852), (426, 654), (436, 639)]