28426480

素因数分解:

$2^4\times 5^1\times {\mathrm{355331}}^1$

素因数の和:355344

約数の個数: 20

約数和(自身を含む): 66091752

約数和(自身を除く): 37665272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 355331, 710662, 1421324, 1776655, 2842648, 3553310, 5685296, 7106620, 14213240, 28426480]

約数ペア:

[(1, 28426480), (2, 14213240), (4, 7106620), (5, 5685296), (8, 3553310), (10, 2842648), (16, 1776655), (20, 1421324), (40, 710662), (80, 355331)]