21357388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13249}}^1$

素因数の和:13297

約数の個数: 24

約数和(自身を含む): 41552000

約数和(自身を除く): 20194612

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13249, 26498, 52996, 172237, 344474, 410719, 688948, 821438, 1642876, 5339347, 10678694, 21357388]

約数ペア:

[(1, 21357388), (2, 10678694), (4, 5339347), (13, 1642876), (26, 821438), (31, 688948), (52, 410719), (62, 344474), (124, 172237), (403, 52996), (806, 26498), (1612, 13249)]