20403721904

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{7823513}}^1$

素因数の和:7823684

約数の個数: 20

約数和(自身を含む): 39774745176

約数和(自身を除く): 19371023272

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 7823513, 15647026, 31294052, 62588104, 125176208, 1275232619, 2550465238, 5100930476, 10201860952, 20403721904]

約数ペア:

[(1, 20403721904), (2, 10201860952), (4, 5100930476), (8, 2550465238), (16, 1275232619), (163, 125176208), (326, 62588104), (652, 31294052), (1304, 15647026), (2608, 7823513)]