18720078

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{2243}}^1$

素因数の和:2368

約数の個数: 32

約数和(自身を含む): 40715136

約数和(自身を除く): 21995058

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 107, 214, 321, 642, 1391, 2243, 2782, 4173, 4486, 6729, 8346, 13458, 29159, 58318, 87477, 174954, 240001, 480002, 720003, 1440006, 3120013, 6240026, 9360039, 18720078]

約数ペア:

[(1, 18720078), (2, 9360039), (3, 6240026), (6, 3120013), (13, 1440006), (26, 720003), (39, 480002), (78, 240001), (107, 174954), (214, 87477), (321, 58318), (642, 29159), (1391, 13458), (2243, 8346), (2782, 6729), (4173, 4486)]