71231440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{409}}^1$

素因数の和:740

約数の個数: 80

約数和(自身を含む): 190344960

約数和(自身を除く): 119113520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 311, 409, 560, 622, 818, 1244, 1555, 1636, 2045, 2177, 2488, 2863, 3110, 3272, 4090, 4354, 4976, 5726, 6220, 6544, 8180, 8708, 10885, 11452, 12440, 14315, 16360, 17416, 21770, 22904, 24880, 28630, 32720, 34832, 43540, 45808, 57260, 87080, 114520, 127199, 174160, 229040, 254398, 508796, 635995, 890393, 1017592, 1271990, 1780786, 2035184, 2543980, 3561572, 4451965, 5087960, 7123144, 8903930, 10175920, 14246288, 17807860, 35615720, 71231440]

約数ペア:

[(1, 71231440), (2, 35615720), (4, 17807860), (5, 14246288), (7, 10175920), (8, 8903930), (10, 7123144), (14, 5087960), (16, 4451965), (20, 3561572), (28, 2543980), (35, 2035184), (40, 1780786), (56, 1271990), (70, 1017592), (80, 890393), (112, 635995), (140, 508796), (280, 254398), (311, 229040), (409, 174160), (560, 127199), (622, 114520), (818, 87080), (1244, 57260), (1555, 45808), (1636, 43540), (2045, 34832), (2177, 32720), (2488, 28630), (2863, 24880), (3110, 22904), (3272, 21770), (4090, 17416), (4354, 16360), (4976, 14315), (5726, 12440), (6220, 11452), (6544, 10885), (8180, 8708)]