20631988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{12799}}^1$

素因数の和:12847

約数の個数: 24

約数和(自身を含む): 40140800

約数和(自身を除く): 19508812

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 12799, 25598, 51196, 166387, 332774, 396769, 665548, 793538, 1587076, 5157997, 10315994, 20631988]

約数ペア:

[(1, 20631988), (2, 10315994), (4, 5157997), (13, 1587076), (26, 793538), (31, 665548), (52, 396769), (62, 332774), (124, 166387), (403, 51196), (806, 25598), (1612, 12799)]