20974995

素因数分解:

$3^2\times 5^1\times {\mathrm{383}}^1\times {\mathrm{1217}}^1$

素因数の和:1611

約数の個数: 24

約数和(自身を含む): 36481536

約数和(自身を除く): 15506541

約数列:

[1, 3, 5, 9, 15, 45, 383, 1149, 1217, 1915, 3447, 3651, 5745, 6085, 10953, 17235, 18255, 54765, 466111, 1398333, 2330555, 4194999, 6991665, 20974995]

約数ペア:

[(1, 20974995), (3, 6991665), (5, 4194999), (9, 2330555), (15, 1398333), (45, 466111), (383, 54765), (1149, 18255), (1217, 17235), (1915, 10953), (3447, 6085), (3651, 5745)]