20180990165

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{258449}}^1$

素因数の和:258581

約数の個数: 32

約数和(自身を含む): 29177971200

約数和(自身を除く): 8996981035

約数列:

[1, 5, 7, 23, 35, 97, 115, 161, 485, 679, 805, 2231, 3395, 11155, 15617, 78085, 258449, 1292245, 1809143, 5944327, 9045715, 25069553, 29721635, 41610289, 125347765, 175486871, 208051445, 576599719, 877434355, 2882998595, 4036198033, 20180990165]

約数ペア:

[(1, 20180990165), (5, 4036198033), (7, 2882998595), (23, 877434355), (35, 576599719), (97, 208051445), (115, 175486871), (161, 125347765), (485, 41610289), (679, 29721635), (805, 25069553), (2231, 9045715), (3395, 5944327), (11155, 1809143), (15617, 1292245), (78085, 258449)]