20768880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{7867}}^1$

素因数の和:7894

約数の個数: 80

約数和(自身を含む): 70245504

約数和(自身を除く): 49476624

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, 7867, 15734, 23601, 31468, 39335, 47202, 62936, 78670, 86537, 94404, 118005, 125872, 157340, 173074, 188808, 236010, 259611, 314680, 346148, 377616, 432685, 472020, 519222, 629360, 692296, 865370, 944040, 1038444, 1298055, 1384592, 1730740, 1888080, 2076888, 2596110, 3461480, 4153776, 5192220, 6922960, 10384440, 20768880]

約数ペア:

[(1, 20768880), (2, 10384440), (3, 6922960), (4, 5192220), (5, 4153776), (6, 3461480), (8, 2596110), (10, 2076888), (11, 1888080), (12, 1730740), (15, 1384592), (16, 1298055), (20, 1038444), (22, 944040), (24, 865370), (30, 692296), (33, 629360), (40, 519222), (44, 472020), (48, 432685), (55, 377616), (60, 346148), (66, 314680), (80, 259611), (88, 236010), (110, 188808), (120, 173074), (132, 157340), (165, 125872), (176, 118005), (220, 94404), (240, 86537), (264, 78670), (330, 62936), (440, 47202), (528, 39335), (660, 31468), (880, 23601), (1320, 15734), (2640, 7867)]