1717840

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:319

約数の個数: 40

約数和(自身を含む): 4051080

約数和(自身を除く): 2333240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 197, 218, 394, 436, 545, 788, 872, 985, 1090, 1576, 1744, 1970, 2180, 3152, 3940, 4360, 7880, 8720, 15760, 21473, 42946, 85892, 107365, 171784, 214730, 343568, 429460, 858920, 1717840]

約数ペア:

[(1, 1717840), (2, 858920), (4, 429460), (5, 343568), (8, 214730), (10, 171784), (16, 107365), (20, 85892), (40, 42946), (80, 21473), (109, 15760), (197, 8720), (218, 7880), (394, 4360), (436, 3940), (545, 3152), (788, 2180), (872, 1970), (985, 1744), (1090, 1576)]