80738020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{8951}}^1$

素因数の和:9012

約数の個数: 48

約数和(自身を含む): 189495936

約数和(自身を除く): 108757916

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 4510, 8951, 9020, 17902, 35804, 44755, 89510, 98461, 179020, 196922, 366991, 393844, 492305, 733982, 984610, 1467964, 1834955, 1969220, 3669910, 4036901, 7339820, 8073802, 16147604, 20184505, 40369010, 80738020]

約数ペア:

[(1, 80738020), (2, 40369010), (4, 20184505), (5, 16147604), (10, 8073802), (11, 7339820), (20, 4036901), (22, 3669910), (41, 1969220), (44, 1834955), (55, 1467964), (82, 984610), (110, 733982), (164, 492305), (205, 393844), (220, 366991), (410, 196922), (451, 179020), (820, 98461), (902, 89510), (1804, 44755), (2255, 35804), (4510, 17902), (8951, 9020)]