19945136

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{65609}}^1$

素因数の和:65636

約数の個数: 20

約数和(自身を含む): 40678200

約数和(自身を除く): 20733064

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 65609, 131218, 262436, 524872, 1049744, 1246571, 2493142, 4986284, 9972568, 19945136]

約数ペア:

[(1, 19945136), (2, 9972568), (4, 4986284), (8, 2493142), (16, 1246571), (19, 1049744), (38, 524872), (76, 262436), (152, 131218), (304, 65609)]