20479473

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1901}}^1$

素因数の和:1939

約数の個数: 40

約数和(自身を含む): 36822720

約数和(自身を除く): 16343247

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 1901, 3591, 5703, 10773, 13307, 17109, 36119, 39921, 51327, 108357, 119763, 153981, 252833, 325071, 359289, 758499, 975213, 1077867, 2275497, 2925639, 6826491, 20479473]

約数ペア:

[(1, 20479473), (3, 6826491), (7, 2925639), (9, 2275497), (19, 1077867), (21, 975213), (27, 758499), (57, 359289), (63, 325071), (81, 252833), (133, 153981), (171, 119763), (189, 108357), (399, 51327), (513, 39921), (567, 36119), (1197, 17109), (1539, 13307), (1901, 10773), (3591, 5703)]