19711809

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{631}}^1$

素因数の和:742

約数の個数: 32

約数和(自身を含む): 31852800

約数和(自身を除く): 12140991

約数列:

[1, 3, 9, 13, 27, 39, 89, 117, 267, 351, 631, 801, 1157, 1893, 2403, 3471, 5679, 8203, 10413, 17037, 24609, 31239, 56159, 73827, 168477, 221481, 505431, 730067, 1516293, 2190201, 6570603, 19711809]

約数ペア:

[(1, 19711809), (3, 6570603), (9, 2190201), (13, 1516293), (27, 730067), (39, 505431), (89, 221481), (117, 168477), (267, 73827), (351, 56159), (631, 31239), (801, 24609), (1157, 17037), (1893, 10413), (2403, 8203), (3471, 5679)]