20766249

素因数分解:

$3^2\times 7^4\times {\mathrm{31}}^2$

素因数の和:96

約数の個数: 45

約数和(自身を含む): 36158109

約数和(自身を除く): 15391860

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 343, 441, 651, 961, 1029, 1519, 1953, 2401, 2883, 3087, 4557, 6727, 7203, 8649, 10633, 13671, 20181, 21609, 31899, 47089, 60543, 74431, 95697, 141267, 223293, 329623, 423801, 669879, 988869, 2307361, 2966607, 6922083, 20766249]

約数ペア:

[(1, 20766249), (3, 6922083), (7, 2966607), (9, 2307361), (21, 988869), (31, 669879), (49, 423801), (63, 329623), (93, 223293), (147, 141267), (217, 95697), (279, 74431), (343, 60543), (441, 47089), (651, 31899), (961, 21609), (1029, 20181), (1519, 13671), (1953, 10633), (2401, 8649), (2883, 7203), (3087, 6727)]