21153548

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{1229}}^1$

素因数の和:1577

約数の個数: 24

約数和(自身を含む): 40019280

約数和(自身を除く): 18865732

約数列:

[1, 2, 4, 13, 26, 52, 331, 662, 1229, 1324, 2458, 4303, 4916, 8606, 15977, 17212, 31954, 63908, 406799, 813598, 1627196, 5288387, 10576774, 21153548]

約数ペア:

[(1, 21153548), (2, 10576774), (4, 5288387), (13, 1627196), (26, 813598), (52, 406799), (331, 63908), (662, 31954), (1229, 17212), (1324, 15977), (2458, 8606), (4303, 4916)]