19744641

素因数分解:

$3^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{359}}^1$

素因数の和:475

約数の個数: 40

約数和(自身を含む): 34151040

約数和(自身を除く): 14406399

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 97, 189, 291, 359, 567, 679, 873, 1077, 2037, 2513, 2619, 3231, 6111, 7539, 7857, 9693, 18333, 22617, 29079, 34823, 54999, 67851, 104469, 203553, 243761, 313407, 731283, 940221, 2193849, 2820663, 6581547, 19744641]

約数ペア:

[(1, 19744641), (3, 6581547), (7, 2820663), (9, 2193849), (21, 940221), (27, 731283), (63, 313407), (81, 243761), (97, 203553), (189, 104469), (291, 67851), (359, 54999), (567, 34823), (679, 29079), (873, 22617), (1077, 18333), (2037, 9693), (2513, 7857), (2619, 7539), (3231, 6111)]