640698960

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{242689}}^1$

素因数の和:242716

約数の個数: 80

約数和(自身を含む): 2166736320

約数和(自身を除く): 1526037360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 242689, 485378, 728067, 970756, 1213445, 1456134, 1941512, 2426890, 2669579, 2912268, 3640335, 3883024, 4853780, 5339158, 5824536, 7280670, 8008737, 9707560, 10678316, 11649072, 13347895, 14561340, 16017474, 19415120, 21356632, 26695790, 29122680, 32034948, 40043685, 42713264, 53391580, 58245360, 64069896, 80087370, 106783160, 128139792, 160174740, 213566320, 320349480, 640698960]

約数ペア:

[(1, 640698960), (2, 320349480), (3, 213566320), (4, 160174740), (5, 128139792), (6, 106783160), (8, 80087370), (10, 64069896), (11, 58245360), (12, 53391580), (15, 42713264), (16, 40043685), (20, 32034948), (22, 29122680), (24, 26695790), (30, 21356632), (33, 19415120), (40, 16017474), (44, 14561340), (48, 13347895), (55, 11649072), (60, 10678316), (66, 9707560), (80, 8008737), (88, 7280670), (110, 5824536), (120, 5339158), (132, 4853780), (165, 3883024), (176, 3640335), (220, 2912268), (240, 2669579), (264, 2426890), (330, 1941512), (440, 1456134), (528, 1213445), (660, 970756), (880, 728067), (1320, 485378), (2640, 242689)]