78888920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{4373}}^1$

素因数の和:4436

約数の個数: 64

約数和(自身を含む): 198404640

約数和(自身を除く): 119515720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1640, 1804, 2255, 3608, 4373, 4510, 8746, 9020, 17492, 18040, 21865, 34984, 43730, 48103, 87460, 96206, 174920, 179293, 192412, 240515, 358586, 384824, 481030, 717172, 896465, 962060, 1434344, 1792930, 1924120, 1972223, 3585860, 3944446, 7171720, 7888892, 9861115, 15777784, 19722230, 39444460, 78888920]

約数ペア:

[(1, 78888920), (2, 39444460), (4, 19722230), (5, 15777784), (8, 9861115), (10, 7888892), (11, 7171720), (20, 3944446), (22, 3585860), (40, 1972223), (41, 1924120), (44, 1792930), (55, 1434344), (82, 962060), (88, 896465), (110, 717172), (164, 481030), (205, 384824), (220, 358586), (328, 240515), (410, 192412), (440, 179293), (451, 174920), (820, 96206), (902, 87460), (1640, 48103), (1804, 43730), (2255, 34984), (3608, 21865), (4373, 18040), (4510, 17492), (8746, 9020)]