20821671

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{433}}^1$

素因数の和:592

約数の個数: 32

約数和(自身を含む): 33539520

約数和(自身を除く): 12717849

約数列:

[1, 3, 9, 13, 27, 39, 117, 137, 351, 411, 433, 1233, 1299, 1781, 3699, 3897, 5343, 5629, 11691, 16029, 16887, 48087, 50661, 59321, 151983, 177963, 533889, 771173, 1601667, 2313519, 6940557, 20821671]

約数ペア:

[(1, 20821671), (3, 6940557), (9, 2313519), (13, 1601667), (27, 771173), (39, 533889), (117, 177963), (137, 151983), (351, 59321), (411, 50661), (433, 48087), (1233, 16887), (1299, 16029), (1781, 11691), (3699, 5629), (3897, 5343)]