400400128

素因数分解:

$2^8\times {\mathrm{1564063}}^1$

素因数の和:1564079

約数の個数: 18

約数和(自身を含む): 799236704

約数和(自身を除く): 398836576

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 1564063, 3128126, 6256252, 12512504, 25025008, 50050016, 100100032, 200200064, 400400128]

約数ペア:

[(1, 400400128), (2, 200200064), (4, 100100032), (8, 50050016), (16, 25025008), (32, 12512504), (64, 6256252), (128, 3128126), (256, 1564063)]