19896695

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{6247}}^1$

素因数の和:6279

約数の個数: 24

約数和(自身を含む): 29915424

約数和(自身を除く): 10018729

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 245, 455, 637, 3185, 6247, 31235, 43729, 81211, 218645, 306103, 406055, 568477, 1530515, 2842385, 3979339, 19896695]

約数ペア:

[(1, 19896695), (5, 3979339), (7, 2842385), (13, 1530515), (35, 568477), (49, 406055), (65, 306103), (91, 218645), (245, 81211), (455, 43729), (637, 31235), (3185, 6247)]