19981654

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6829}}^1$

素因数の和:6868

約数の個数: 32

約数和(自身を含む): 39340800

約数和(自身を除く): 19359146

約数列:

[1, 2, 7, 11, 14, 19, 22, 38, 77, 133, 154, 209, 266, 418, 1463, 2926, 6829, 13658, 47803, 75119, 95606, 129751, 150238, 259502, 525833, 908257, 1051666, 1427261, 1816514, 2854522, 9990827, 19981654]

約数ペア:

[(1, 19981654), (2, 9990827), (7, 2854522), (11, 1816514), (14, 1427261), (19, 1051666), (22, 908257), (38, 525833), (77, 259502), (133, 150238), (154, 129751), (209, 95606), (266, 75119), (418, 47803), (1463, 13658), (2926, 6829)]