19810816

素因数分解:

$2^9\times {\mathrm{38693}}^1$

素因数の和:38711

約数の個数: 20

約数和(自身を含む): 39583962

約数和(自身を除く): 19773146

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 38693, 77386, 154772, 309544, 619088, 1238176, 2476352, 4952704, 9905408, 19810816]

約数ペア:

[(1, 19810816), (2, 9905408), (4, 4952704), (8, 2476352), (16, 1238176), (32, 619088), (64, 309544), (128, 154772), (256, 77386), (512, 38693)]