828440320

素因数分解:

$2^8\times 5^1\times {\mathrm{647219}}^1$

素因数の和:647240

約数の個数: 36

約数和(自身を含む): 1984376520

約数和(自身を除く): 1155936200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 647219, 1294438, 2588876, 3236095, 5177752, 6472190, 10355504, 12944380, 20711008, 25888760, 41422016, 51777520, 82844032, 103555040, 165688064, 207110080, 414220160, 828440320]

約数ペア:

[(1, 828440320), (2, 414220160), (4, 207110080), (5, 165688064), (8, 103555040), (10, 82844032), (16, 51777520), (20, 41422016), (32, 25888760), (40, 20711008), (64, 12944380), (80, 10355504), (128, 6472190), (160, 5177752), (256, 3236095), (320, 2588876), (640, 1294438), (1280, 647219)]