20566917

素因数分解:

$3^2\times 7^2\times {\mathrm{149}}^1\times {\mathrm{313}}^1$

素因数の和:482

約数の個数: 36

約数和(自身を含む): 34901100

約数和(自身を除く): 14334183

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 149, 313, 441, 447, 939, 1043, 1341, 2191, 2817, 3129, 6573, 7301, 9387, 15337, 19719, 21903, 46011, 46637, 65709, 138033, 139911, 326459, 419733, 979377, 2285213, 2938131, 6855639, 20566917]

約数ペア:

[(1, 20566917), (3, 6855639), (7, 2938131), (9, 2285213), (21, 979377), (49, 419733), (63, 326459), (147, 139911), (149, 138033), (313, 65709), (441, 46637), (447, 46011), (939, 21903), (1043, 19719), (1341, 15337), (2191, 9387), (2817, 7301), (3129, 6573)]