20809404

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7507}}^1$

素因数の和:7535

約数の個数: 72

約数和(自身を含む): 65589888

約数和(自身を除く): 44780484

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7507, 15014, 22521, 30028, 45042, 52549, 67563, 82577, 90084, 105098, 135126, 157647, 165154, 210196, 247731, 270252, 315294, 330308, 472941, 495462, 578039, 630588, 743193, 945882, 990924, 1156078, 1486386, 1734117, 1891764, 2312156, 2972772, 3468234, 5202351, 6936468, 10404702, 20809404]

約数ペア:

[(1, 20809404), (2, 10404702), (3, 6936468), (4, 5202351), (6, 3468234), (7, 2972772), (9, 2312156), (11, 1891764), (12, 1734117), (14, 1486386), (18, 1156078), (21, 990924), (22, 945882), (28, 743193), (33, 630588), (36, 578039), (42, 495462), (44, 472941), (63, 330308), (66, 315294), (77, 270252), (84, 247731), (99, 210196), (126, 165154), (132, 157647), (154, 135126), (198, 105098), (231, 90084), (252, 82577), (308, 67563), (396, 52549), (462, 45042), (693, 30028), (924, 22521), (1386, 15014), (2772, 7507)]