21001207144

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{25991593}}^1$

素因数の和:25991700

約数の個数: 16

約数和(自身を含む): 39767138820

約数和(自身を除く): 18765931676

約数列:

[1, 2, 4, 8, 101, 202, 404, 808, 25991593, 51983186, 103966372, 207932744, 2625150893, 5250301786, 10500603572, 21001207144]

約数ペア:

[(1, 21001207144), (2, 10500603572), (4, 5250301786), (8, 2625150893), (101, 207932744), (202, 103966372), (404, 51983186), (808, 25991593)]