81717518

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{109}}^2\times {\mathrm{181}}^1$

素因数の和:420

約数の個数: 24

約数和(自身を含む): 130941720

約数和(自身を除く): 49224202

約数列:

[1, 2, 19, 38, 109, 181, 218, 362, 2071, 3439, 4142, 6878, 11881, 19729, 23762, 39458, 225739, 374851, 451478, 749702, 2150461, 4300922, 40858759, 81717518]

約数ペア:

[(1, 81717518), (2, 40858759), (19, 4300922), (38, 2150461), (109, 749702), (181, 451478), (218, 374851), (362, 225739), (2071, 39458), (3439, 23762), (4142, 19729), (6878, 11881)]