81019420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{213209}}^1$

素因数の和:213237

約数の個数: 24

約数和(自身を含む): 179096400

約数和(自身を除く): 98076980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 213209, 426418, 852836, 1066045, 2132090, 4050971, 4264180, 8101942, 16203884, 20254855, 40509710, 81019420]

約数ペア:

[(1, 81019420), (2, 40509710), (4, 20254855), (5, 16203884), (10, 8101942), (19, 4264180), (20, 4050971), (38, 2132090), (76, 1066045), (95, 852836), (190, 426418), (380, 213209)]