20652639

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{271}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 33423360

約数和(自身を除く): 12770721

約数列:

[1, 3, 7, 19, 21, 57, 133, 191, 271, 399, 573, 813, 1337, 1897, 3629, 4011, 5149, 5691, 10887, 15447, 25403, 36043, 51761, 76209, 108129, 155283, 362327, 983459, 1086981, 2950377, 6884213, 20652639]

約数ペア:

[(1, 20652639), (3, 6884213), (7, 2950377), (19, 1086981), (21, 983459), (57, 362327), (133, 155283), (191, 108129), (271, 76209), (399, 51761), (573, 36043), (813, 25403), (1337, 15447), (1897, 10887), (3629, 5691), (4011, 5149)]