19148840

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{983}}^1$

素因数の和:1481

約数の個数: 32

約数和(自身を含む): 43217280

約数和(自身を除く): 24068440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 983, 1948, 1966, 2435, 3896, 3932, 4870, 4915, 7864, 9740, 9830, 19480, 19660, 39320, 478721, 957442, 1914884, 2393605, 3829768, 4787210, 9574420, 19148840]

約数ペア:

[(1, 19148840), (2, 9574420), (4, 4787210), (5, 3829768), (8, 2393605), (10, 1914884), (20, 957442), (40, 478721), (487, 39320), (974, 19660), (983, 19480), (1948, 9830), (1966, 9740), (2435, 7864), (3896, 4915), (3932, 4870)]