18720842

素因数分解:

$2^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{661}}^1$

素因数の和:711

約数の個数: 36

約数和(自身を含む): 34753014

約数和(自身を除く): 16032172

約数列:

[1, 2, 7, 14, 17, 34, 49, 98, 119, 238, 289, 578, 661, 833, 1322, 1666, 2023, 4046, 4627, 9254, 11237, 14161, 22474, 28322, 32389, 64778, 78659, 157318, 191029, 382058, 550613, 1101226, 1337203, 2674406, 9360421, 18720842]

約数ペア:

[(1, 18720842), (2, 9360421), (7, 2674406), (14, 1337203), (17, 1101226), (34, 550613), (49, 382058), (98, 191029), (119, 157318), (238, 78659), (289, 64778), (578, 32389), (661, 28322), (833, 22474), (1322, 14161), (1666, 11237), (2023, 9254), (4046, 4627)]