20682431

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:315

約数の個数: 32

約数和(自身を含む): 27678720

約数和(自身を除く): 6996289

約数列:

[1, 7, 11, 19, 67, 77, 133, 209, 211, 469, 737, 1273, 1463, 1477, 2321, 4009, 5159, 8911, 14003, 14137, 16247, 28063, 44099, 98021, 98959, 155507, 268603, 308693, 1088549, 1880221, 2954633, 20682431]

約数ペア:

[(1, 20682431), (7, 2954633), (11, 1880221), (19, 1088549), (67, 308693), (77, 268603), (133, 155507), (209, 98959), (211, 98021), (469, 44099), (737, 28063), (1273, 16247), (1463, 14137), (1477, 14003), (2321, 8911), (4009, 5159)]