68789990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{2339}}^1$

素因数の和:2536

約数の個数: 32

約数和(自身を含む): 131919840

約数和(自身を除く): 63129850

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 173, 346, 865, 1730, 2339, 2941, 4678, 5882, 11695, 14705, 23390, 29410, 39763, 79526, 198815, 397630, 404647, 809294, 2023235, 4046470, 6878999, 13757998, 34394995, 68789990]

約数ペア:

[(1, 68789990), (2, 34394995), (5, 13757998), (10, 6878999), (17, 4046470), (34, 2023235), (85, 809294), (170, 404647), (173, 397630), (346, 198815), (865, 79526), (1730, 39763), (2339, 29410), (2941, 23390), (4678, 14705), (5882, 11695)]