20386480

素因数分解:

$2^4\times 5^1\times {\mathrm{254831}}^1$

素因数の和:254844

約数の個数: 20

約数和(自身を含む): 47398752

約数和(自身を除く): 27012272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254831, 509662, 1019324, 1274155, 2038648, 2548310, 4077296, 5096620, 10193240, 20386480]

約数ペア:

[(1, 20386480), (2, 10193240), (4, 5096620), (5, 4077296), (8, 2548310), (10, 2038648), (16, 1274155), (20, 1019324), (40, 509662), (80, 254831)]