79707280

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1279}}^1$

素因数の和:1352

約数の個数: 80

約数和(自身を含む): 199987200

約数和(自身を除く): 120279920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 328, 380, 410, 656, 760, 779, 820, 1279, 1520, 1558, 1640, 2558, 3116, 3280, 3895, 5116, 6232, 6395, 7790, 10232, 12464, 12790, 15580, 20464, 24301, 25580, 31160, 48602, 51160, 52439, 62320, 97204, 102320, 104878, 121505, 194408, 209756, 243010, 262195, 388816, 419512, 486020, 524390, 839024, 972040, 996341, 1048780, 1944080, 1992682, 2097560, 3985364, 4195120, 4981705, 7970728, 9963410, 15941456, 19926820, 39853640, 79707280]

約数ペア:

[(1, 79707280), (2, 39853640), (4, 19926820), (5, 15941456), (8, 9963410), (10, 7970728), (16, 4981705), (19, 4195120), (20, 3985364), (38, 2097560), (40, 1992682), (41, 1944080), (76, 1048780), (80, 996341), (82, 972040), (95, 839024), (152, 524390), (164, 486020), (190, 419512), (205, 388816), (304, 262195), (328, 243010), (380, 209756), (410, 194408), (656, 121505), (760, 104878), (779, 102320), (820, 97204), (1279, 62320), (1520, 52439), (1558, 51160), (1640, 48602), (2558, 31160), (3116, 25580), (3280, 24301), (3895, 20464), (5116, 15580), (6232, 12790), (6395, 12464), (7790, 10232)]