128840840

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{30103}}^1$

素因数の和:30221

約数の個数: 32

約数和(自身を含む): 292610880

約数和(自身を除く): 163770040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 30103, 60206, 120412, 150515, 240824, 301030, 602060, 1204120, 3221021, 6442042, 12884084, 16105105, 25768168, 32210210, 64420420, 128840840]

約数ペア:

[(1, 128840840), (2, 64420420), (4, 32210210), (5, 25768168), (8, 16105105), (10, 12884084), (20, 6442042), (40, 3221021), (107, 1204120), (214, 602060), (428, 301030), (535, 240824), (856, 150515), (1070, 120412), (2140, 60206), (4280, 30103)]