647689984

素因数分解:

$2^8\times {\mathrm{2530039}}^1$

素因数の和:2530055

約数の個数: 18

約数和(自身を含む): 1292850440

約数和(自身を除く): 645160456

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 2530039, 5060078, 10120156, 20240312, 40480624, 80961248, 161922496, 323844992, 647689984]

約数ペア:

[(1, 647689984), (2, 323844992), (4, 161922496), (8, 80961248), (16, 40480624), (32, 20240312), (64, 10120156), (128, 5060078), (256, 2530039)]