15840880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:454

約数の個数: 80

約数和(自身を含む): 41140224

約数和(自身を除く): 25299344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 47, 55, 80, 88, 94, 110, 176, 188, 220, 235, 376, 383, 440, 470, 517, 752, 766, 880, 940, 1034, 1532, 1880, 1915, 2068, 2585, 3064, 3760, 3830, 4136, 4213, 5170, 6128, 7660, 8272, 8426, 10340, 15320, 16852, 18001, 20680, 21065, 30640, 33704, 36002, 41360, 42130, 67408, 72004, 84260, 90005, 144008, 168520, 180010, 198011, 288016, 337040, 360020, 396022, 720040, 792044, 990055, 1440080, 1584088, 1980110, 3168176, 3960220, 7920440, 15840880]

約数ペア:

[(1, 15840880), (2, 7920440), (4, 3960220), (5, 3168176), (8, 1980110), (10, 1584088), (11, 1440080), (16, 990055), (20, 792044), (22, 720040), (40, 396022), (44, 360020), (47, 337040), (55, 288016), (80, 198011), (88, 180010), (94, 168520), (110, 144008), (176, 90005), (188, 84260), (220, 72004), (235, 67408), (376, 42130), (383, 41360), (440, 36002), (470, 33704), (517, 30640), (752, 21065), (766, 20680), (880, 18001), (940, 16852), (1034, 15320), (1532, 10340), (1880, 8426), (1915, 8272), (2068, 7660), (2585, 6128), (3064, 5170), (3760, 4213), (3830, 4136)]