19911254

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1$

素因数の和:512

約数の個数: 32

約数和(自身を含む): 34096032

約数和(自身を除く): 14184778

約数列:

[1, 2, 11, 22, 37, 61, 74, 122, 401, 407, 671, 802, 814, 1342, 2257, 4411, 4514, 8822, 14837, 24461, 24827, 29674, 48922, 49654, 163207, 269071, 326414, 538142, 905057, 1810114, 9955627, 19911254]

約数ペア:

[(1, 19911254), (2, 9955627), (11, 1810114), (22, 905057), (37, 538142), (61, 326414), (74, 269071), (122, 163207), (401, 49654), (407, 48922), (671, 29674), (802, 24827), (814, 24461), (1342, 14837), (2257, 8822), (4411, 4514)]