21969945

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{21227}}^1$

素因数の和:21261

約数の個数: 24

約数和(自身を含む): 39738816

約数和(自身を除く): 17768871

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 115, 207, 345, 1035, 21227, 63681, 106135, 191043, 318405, 488221, 955215, 1464663, 2441105, 4393989, 7323315, 21969945]

約数ペア:

[(1, 21969945), (3, 7323315), (5, 4393989), (9, 2441105), (15, 1464663), (23, 955215), (45, 488221), (69, 318405), (115, 191043), (207, 106135), (345, 63681), (1035, 21227)]