19010660

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{449}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 41958000

約数和(自身を除く): 22947340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 73, 116, 145, 146, 290, 292, 365, 449, 580, 730, 898, 1460, 1796, 2117, 2245, 4234, 4490, 8468, 8980, 10585, 13021, 21170, 26042, 32777, 42340, 52084, 65105, 65554, 130210, 131108, 163885, 260420, 327770, 655540, 950533, 1901066, 3802132, 4752665, 9505330, 19010660]

約数ペア:

[(1, 19010660), (2, 9505330), (4, 4752665), (5, 3802132), (10, 1901066), (20, 950533), (29, 655540), (58, 327770), (73, 260420), (116, 163885), (145, 131108), (146, 130210), (290, 65554), (292, 65105), (365, 52084), (449, 42340), (580, 32777), (730, 26042), (898, 21170), (1460, 13021), (1796, 10585), (2117, 8980), (2245, 8468), (4234, 4490)]