19690312

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 37910520

約数和(自身を除く): 18220208

約数列:

[1, 2, 4, 8, 61, 122, 157, 244, 257, 314, 488, 514, 628, 1028, 1256, 2056, 9577, 15677, 19154, 31354, 38308, 40349, 62708, 76616, 80698, 125416, 161396, 322792, 2461289, 4922578, 9845156, 19690312]

約数ペア:

[(1, 19690312), (2, 9845156), (4, 4922578), (8, 2461289), (61, 322792), (122, 161396), (157, 125416), (244, 80698), (257, 76616), (314, 62708), (488, 40349), (514, 38308), (628, 31354), (1028, 19154), (1256, 15677), (2056, 9577)]