20311851

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{761}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 32772096

約数和(自身を除く): 12460245

約数列:

[1, 3, 7, 21, 31, 41, 93, 123, 217, 287, 651, 761, 861, 1271, 2283, 3813, 5327, 8897, 15981, 23591, 26691, 31201, 70773, 93603, 165137, 218407, 495411, 655221, 967231, 2901693, 6770617, 20311851]

約数ペア:

[(1, 20311851), (3, 6770617), (7, 2901693), (21, 967231), (31, 655221), (41, 495411), (93, 218407), (123, 165137), (217, 93603), (287, 70773), (651, 31201), (761, 26691), (861, 23591), (1271, 15981), (2283, 8897), (3813, 5327)]