199975568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{15761}}^1$

素因数の和:15843

約数の個数: 40

約数和(自身を含む): 424123896

約数和(自身を除く): 224148328

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1586, 3172, 6344, 12688, 15761, 31522, 63044, 126088, 204893, 252176, 409786, 819572, 961421, 1639144, 1922842, 3278288, 3845684, 7691368, 12498473, 15382736, 24996946, 49993892, 99987784, 199975568]

約数ペア:

[(1, 199975568), (2, 99987784), (4, 49993892), (8, 24996946), (13, 15382736), (16, 12498473), (26, 7691368), (52, 3845684), (61, 3278288), (104, 1922842), (122, 1639144), (208, 961421), (244, 819572), (488, 409786), (793, 252176), (976, 204893), (1586, 126088), (3172, 63044), (6344, 31522), (12688, 15761)]