20813884

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{271}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 45208576

約数和(自身を除く): 24394692

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 182, 211, 271, 364, 422, 542, 844, 1084, 1477, 1897, 2743, 2954, 3523, 3794, 5486, 5908, 7046, 7588, 10972, 14092, 19201, 24661, 38402, 49322, 57181, 76804, 98644, 114362, 228724, 400267, 743353, 800534, 1486706, 1601068, 2973412, 5203471, 10406942, 20813884]

約数ペア:

[(1, 20813884), (2, 10406942), (4, 5203471), (7, 2973412), (13, 1601068), (14, 1486706), (26, 800534), (28, 743353), (52, 400267), (91, 228724), (182, 114362), (211, 98644), (271, 76804), (364, 57181), (422, 49322), (542, 38402), (844, 24661), (1084, 19201), (1477, 14092), (1897, 10972), (2743, 7588), (2954, 7046), (3523, 5908), (3794, 5486)]