19711797

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:545

約数の個数: 32

約数和(自身を含む): 31948800

約数和(自身を除く): 12237003

約数列:

[1, 3, 7, 19, 21, 57, 127, 133, 381, 389, 399, 889, 1167, 2413, 2667, 2723, 7239, 7391, 8169, 16891, 22173, 49403, 50673, 51737, 148209, 155211, 345821, 938657, 1037463, 2815971, 6570599, 19711797]

約数ペア:

[(1, 19711797), (3, 6570599), (7, 2815971), (19, 1037463), (21, 938657), (57, 345821), (127, 155211), (133, 148209), (381, 51737), (389, 50673), (399, 49403), (889, 22173), (1167, 16891), (2413, 8169), (2667, 7391), (2723, 7239)]