28459739

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 38208000

約数和(自身を除く): 9748261

約数列:

[1, 7, 11, 19, 49, 77, 133, 209, 343, 397, 539, 931, 1463, 2779, 3773, 4367, 6517, 7543, 10241, 19453, 30569, 52801, 71687, 82973, 136171, 213983, 369607, 580811, 1497881, 2587249, 4065677, 28459739]

約数ペア:

[(1, 28459739), (7, 4065677), (11, 2587249), (19, 1497881), (49, 580811), (77, 369607), (133, 213983), (209, 136171), (343, 82973), (397, 71687), (539, 52801), (931, 30569), (1463, 19453), (2779, 10241), (3773, 7543), (4367, 6517)]