71290360

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:400

約数の個数: 64

約数和(自身を含む): 164656800

約数和(自身を除く): 93366440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 109, 166, 197, 218, 332, 394, 415, 436, 545, 664, 788, 830, 872, 985, 1090, 1576, 1660, 1970, 2180, 3320, 3940, 4360, 7880, 9047, 16351, 18094, 21473, 32702, 36188, 42946, 45235, 65404, 72376, 81755, 85892, 90470, 107365, 130808, 163510, 171784, 180940, 214730, 327020, 361880, 429460, 654040, 858920, 1782259, 3564518, 7129036, 8911295, 14258072, 17822590, 35645180, 71290360]

約数ペア:

[(1, 71290360), (2, 35645180), (4, 17822590), (5, 14258072), (8, 8911295), (10, 7129036), (20, 3564518), (40, 1782259), (83, 858920), (109, 654040), (166, 429460), (197, 361880), (218, 327020), (332, 214730), (394, 180940), (415, 171784), (436, 163510), (545, 130808), (664, 107365), (788, 90470), (830, 85892), (872, 81755), (985, 72376), (1090, 65404), (1576, 45235), (1660, 42946), (1970, 36188), (2180, 32702), (3320, 21473), (3940, 18094), (4360, 16351), (7880, 9047)]