179909420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{4451}}^1$

素因数の和:4550

約数の個数: 48

約数和(自身を含む): 394910208

約数和(自身を除く): 215000788

約数列:

[1, 2, 4, 5, 10, 20, 43, 47, 86, 94, 172, 188, 215, 235, 430, 470, 860, 940, 2021, 4042, 4451, 8084, 8902, 10105, 17804, 20210, 22255, 40420, 44510, 89020, 191393, 209197, 382786, 418394, 765572, 836788, 956965, 1045985, 1913930, 2091970, 3827860, 4183940, 8995471, 17990942, 35981884, 44977355, 89954710, 179909420]

約数ペア:

[(1, 179909420), (2, 89954710), (4, 44977355), (5, 35981884), (10, 17990942), (20, 8995471), (43, 4183940), (47, 3827860), (86, 2091970), (94, 1913930), (172, 1045985), (188, 956965), (215, 836788), (235, 765572), (430, 418394), (470, 382786), (860, 209197), (940, 191393), (2021, 89020), (4042, 44510), (4451, 40420), (8084, 22255), (8902, 20210), (10105, 17804)]