8239880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 20623680

約数和(自身を除く): 12383800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 307, 440, 488, 610, 614, 671, 1220, 1228, 1342, 1535, 2440, 2456, 2684, 3070, 3355, 3377, 5368, 6140, 6710, 6754, 12280, 13420, 13508, 16885, 18727, 26840, 27016, 33770, 37454, 67540, 74908, 93635, 135080, 149816, 187270, 205997, 374540, 411994, 749080, 823988, 1029985, 1647976, 2059970, 4119940, 8239880]

約数ペア:

[(1, 8239880), (2, 4119940), (4, 2059970), (5, 1647976), (8, 1029985), (10, 823988), (11, 749080), (20, 411994), (22, 374540), (40, 205997), (44, 187270), (55, 149816), (61, 135080), (88, 93635), (110, 74908), (122, 67540), (220, 37454), (244, 33770), (305, 27016), (307, 26840), (440, 18727), (488, 16885), (610, 13508), (614, 13420), (671, 12280), (1220, 6754), (1228, 6710), (1342, 6140), (1535, 5368), (2440, 3377), (2456, 3355), (2684, 3070)]