19783225

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 31426560

約数和(自身を除く): 11643335

約数列:

[1, 5, 7, 11, 25, 35, 43, 55, 77, 175, 215, 239, 275, 301, 385, 473, 1075, 1195, 1505, 1673, 1925, 2365, 2629, 3311, 5975, 7525, 8365, 10277, 11825, 13145, 16555, 18403, 41825, 51385, 65725, 71939, 82775, 92015, 113047, 256925, 359695, 460075, 565235, 791329, 1798475, 2826175, 3956645, 19783225]

約数ペア:

[(1, 19783225), (5, 3956645), (7, 2826175), (11, 1798475), (25, 791329), (35, 565235), (43, 460075), (55, 359695), (77, 256925), (175, 113047), (215, 92015), (239, 82775), (275, 71939), (301, 65725), (385, 51385), (473, 41825), (1075, 18403), (1195, 16555), (1505, 13145), (1673, 11825), (1925, 10277), (2365, 8365), (2629, 7525), (3311, 5975)]