20631226

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{641}}^1$

素因数の和:691

約数の個数: 48

約数和(自身を含む): 40985280

約数和(自身を除く): 20354054

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 77, 121, 133, 154, 209, 242, 266, 418, 641, 847, 1282, 1463, 1694, 2299, 2926, 4487, 4598, 7051, 8974, 12179, 14102, 16093, 24358, 32186, 49357, 77561, 85253, 98714, 133969, 155122, 170506, 267938, 542927, 937783, 1085854, 1473659, 1875566, 2947318, 10315613, 20631226]

約数ペア:

[(1, 20631226), (2, 10315613), (7, 2947318), (11, 1875566), (14, 1473659), (19, 1085854), (22, 937783), (38, 542927), (77, 267938), (121, 170506), (133, 155122), (154, 133969), (209, 98714), (242, 85253), (266, 77561), (418, 49357), (641, 32186), (847, 24358), (1282, 16093), (1463, 14102), (1694, 12179), (2299, 8974), (2926, 7051), (4487, 4598)]