18728983

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:247

約数の個数: 32

約数和(自身を含む): 24514560

約数和(自身を除く): 5785577

約数列:

[1, 7, 13, 29, 47, 91, 151, 203, 329, 377, 611, 1057, 1363, 1963, 2639, 4277, 4379, 7097, 9541, 13741, 17719, 30653, 49679, 56927, 92261, 124033, 205813, 398489, 645827, 1440691, 2675569, 18728983]

約数ペア:

[(1, 18728983), (7, 2675569), (13, 1440691), (29, 645827), (47, 398489), (91, 205813), (151, 124033), (203, 92261), (329, 56927), (377, 49679), (611, 30653), (1057, 17719), (1363, 13741), (1963, 9541), (2639, 7097), (4277, 4379)]