18987254

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{337}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 33729696

約数和(自身を除く): 14742442

約数列:

[1, 2, 11, 13, 22, 26, 143, 197, 286, 337, 394, 674, 2167, 2561, 3707, 4334, 4381, 5122, 7414, 8762, 28171, 48191, 56342, 66389, 96382, 132778, 730279, 863057, 1460558, 1726114, 9493627, 18987254]

約数ペア:

[(1, 18987254), (2, 9493627), (11, 1726114), (13, 1460558), (22, 863057), (26, 730279), (143, 132778), (197, 96382), (286, 66389), (337, 56342), (394, 48191), (674, 28171), (2167, 8762), (2561, 7414), (3707, 5122), (4334, 4381)]