19784860

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13933}}^1$

素因数の和:14013

約数の個数: 24

約数和(自身を含む): 42136416

約数和(自身を除く): 22351556

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13933, 27866, 55732, 69665, 139330, 278660, 989243, 1978486, 3956972, 4946215, 9892430, 19784860]

約数ペア:

[(1, 19784860), (2, 9892430), (4, 4946215), (5, 3956972), (10, 1978486), (20, 989243), (71, 278660), (142, 139330), (284, 69665), (355, 55732), (710, 27866), (1420, 13933)]