19380080

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1543}}^1$

素因数の和:1713

約数の個数: 40

約数和(自身を含む): 45375072

約数和(自身を除く): 25994992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 314, 628, 785, 1256, 1543, 1570, 2512, 3086, 3140, 6172, 6280, 7715, 12344, 12560, 15430, 24688, 30860, 61720, 123440, 242251, 484502, 969004, 1211255, 1938008, 2422510, 3876016, 4845020, 9690040, 19380080]

約数ペア:

[(1, 19380080), (2, 9690040), (4, 4845020), (5, 3876016), (8, 2422510), (10, 1938008), (16, 1211255), (20, 969004), (40, 484502), (80, 242251), (157, 123440), (314, 61720), (628, 30860), (785, 24688), (1256, 15430), (1543, 12560), (1570, 12344), (2512, 7715), (3086, 6280), (3140, 6172)]