71715880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{479}}^1$

素因数の和:706

約数の個数: 64

約数和(自身を含む): 171072000

約数和(自身を除く): 99356120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 197, 380, 394, 479, 760, 788, 958, 985, 1576, 1916, 1970, 2395, 3743, 3832, 3940, 4790, 7486, 7880, 9101, 9580, 14972, 18202, 18715, 19160, 29944, 36404, 37430, 45505, 72808, 74860, 91010, 94363, 149720, 182020, 188726, 364040, 377452, 471815, 754904, 943630, 1792897, 1887260, 3585794, 3774520, 7171588, 8964485, 14343176, 17928970, 35857940, 71715880]

約数ペア:

[(1, 71715880), (2, 35857940), (4, 17928970), (5, 14343176), (8, 8964485), (10, 7171588), (19, 3774520), (20, 3585794), (38, 1887260), (40, 1792897), (76, 943630), (95, 754904), (152, 471815), (190, 377452), (197, 364040), (380, 188726), (394, 182020), (479, 149720), (760, 94363), (788, 91010), (958, 74860), (985, 72808), (1576, 45505), (1916, 37430), (1970, 36404), (2395, 29944), (3743, 19160), (3832, 18715), (3940, 18202), (4790, 14972), (7486, 9580), (7880, 9101)]