19990730

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{557}}^1$

素因数の和:698

約数の個数: 32

約数和(自身を含む): 37403856

約数和(自身を除く): 17413126

約数列:

[1, 2, 5, 10, 37, 74, 97, 185, 194, 370, 485, 557, 970, 1114, 2785, 3589, 5570, 7178, 17945, 20609, 35890, 41218, 54029, 103045, 108058, 206090, 270145, 540290, 1999073, 3998146, 9995365, 19990730]

約数ペア:

[(1, 19990730), (2, 9995365), (5, 3998146), (10, 1999073), (37, 540290), (74, 270145), (97, 206090), (185, 108058), (194, 103045), (370, 54029), (485, 41218), (557, 35890), (970, 20609), (1114, 17945), (2785, 7178), (3589, 5570)]