19990508

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{7109}}^1$

素因数の和:7169

約数の個数: 24

約数和(自身を含む): 37825200

約数和(自身を除く): 17834692

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 148, 703, 1406, 2812, 7109, 14218, 28436, 135071, 263033, 270142, 526066, 540284, 1052132, 4997627, 9995254, 19990508]

約数ペア:

[(1, 19990508), (2, 9995254), (4, 4997627), (19, 1052132), (37, 540284), (38, 526066), (74, 270142), (76, 263033), (148, 135071), (703, 28436), (1406, 14218), (2812, 7109)]