19261281

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 10011039

約数列:

[1, 3, 13, 23, 39, 69, 109, 197, 299, 327, 591, 897, 1417, 2507, 2561, 4251, 4531, 7521, 7683, 13593, 21473, 32591, 58903, 64419, 97773, 176709, 279149, 493879, 837447, 1481637, 6420427, 19261281]

約数ペア:

[(1, 19261281), (3, 6420427), (13, 1481637), (23, 837447), (39, 493879), (69, 279149), (109, 176709), (197, 97773), (299, 64419), (327, 58903), (591, 32591), (897, 21473), (1417, 13593), (2507, 7683), (2561, 7521), (4251, 4531)]