257789246

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{2141}}^1$

素因数の和:2588

約数の個数: 32

約数和(自身を含む): 455577696

約数和(自身を除く): 197788450

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 421, 842, 2141, 4282, 4631, 5473, 9262, 10946, 23551, 27833, 47102, 55666, 60203, 120406, 306163, 612326, 901361, 1802722, 9914971, 11717693, 19829942, 23435386, 128894623, 257789246]

約数ペア:

[(1, 257789246), (2, 128894623), (11, 23435386), (13, 19829942), (22, 11717693), (26, 9914971), (143, 1802722), (286, 901361), (421, 612326), (842, 306163), (2141, 120406), (4282, 60203), (4631, 55666), (5473, 47102), (9262, 27833), (10946, 23551)]