81642568

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{449}}^1$

素因数の和:670

約数の個数: 64

約数和(自身を含む): 186624000

約数和(自身を除く): 104981432

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 191, 238, 382, 449, 476, 764, 898, 952, 1337, 1528, 1796, 2674, 3143, 3247, 3592, 5348, 6286, 6494, 7633, 10696, 12572, 12988, 15266, 22729, 25144, 25976, 30532, 45458, 53431, 61064, 85759, 90916, 106862, 171518, 181832, 213724, 343036, 427448, 600313, 686072, 1200626, 1457903, 2401252, 2915806, 4802504, 5831612, 10205321, 11663224, 20410642, 40821284, 81642568]

約数ペア:

[(1, 81642568), (2, 40821284), (4, 20410642), (7, 11663224), (8, 10205321), (14, 5831612), (17, 4802504), (28, 2915806), (34, 2401252), (56, 1457903), (68, 1200626), (119, 686072), (136, 600313), (191, 427448), (238, 343036), (382, 213724), (449, 181832), (476, 171518), (764, 106862), (898, 90916), (952, 85759), (1337, 61064), (1528, 53431), (1796, 45458), (2674, 30532), (3143, 25976), (3247, 25144), (3592, 22729), (5348, 15266), (6286, 12988), (6494, 12572), (7633, 10696)]