21023480

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6653}}^1$

素因数の和:6743

約数の個数: 32

約数和(自身を含む): 47908800

約数和(自身を除く): 26885320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6653, 13306, 26612, 33265, 53224, 66530, 133060, 266120, 525587, 1051174, 2102348, 2627935, 4204696, 5255870, 10511740, 21023480]

約数ペア:

[(1, 21023480), (2, 10511740), (4, 5255870), (5, 4204696), (8, 2627935), (10, 2102348), (20, 1051174), (40, 525587), (79, 266120), (158, 133060), (316, 66530), (395, 53224), (632, 33265), (790, 26612), (1580, 13306), (3160, 6653)]