19919277

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2$

素因数の和:124

約数の個数: 60

約数和(自身を含む): 36648480

約数和(自身を除く): 16729203

約数列:

[1, 3, 7, 9, 19, 21, 27, 43, 57, 63, 81, 129, 133, 171, 189, 301, 387, 399, 513, 567, 817, 903, 1161, 1197, 1539, 1849, 2451, 2709, 3483, 3591, 5547, 5719, 7353, 8127, 10773, 12943, 16641, 17157, 22059, 24381, 35131, 38829, 49923, 51471, 66177, 105393, 116487, 149769, 154413, 245917, 316179, 349461, 463239, 737751, 948537, 1048383, 2213253, 2845611, 6639759, 19919277]

約数ペア:

[(1, 19919277), (3, 6639759), (7, 2845611), (9, 2213253), (19, 1048383), (21, 948537), (27, 737751), (43, 463239), (57, 349461), (63, 316179), (81, 245917), (129, 154413), (133, 149769), (171, 116487), (189, 105393), (301, 66177), (387, 51471), (399, 49923), (513, 38829), (567, 35131), (817, 24381), (903, 22059), (1161, 17157), (1197, 16641), (1539, 12943), (1849, 10773), (2451, 8127), (2709, 7353), (3483, 5719), (3591, 5547)]