1820851487

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:480

約数の個数: 64

約数和(自身を含む): 2461777920

約数和(自身を除く): 640926433

約数列:

[1, 7, 13, 17, 47, 79, 91, 119, 221, 317, 329, 553, 611, 799, 1027, 1343, 1547, 2219, 3713, 4121, 4277, 5389, 5593, 7189, 9401, 10387, 14899, 17459, 25043, 25991, 28847, 37723, 48269, 63121, 70057, 72709, 104293, 122213, 175301, 193687, 253283, 325559, 337883, 425731, 441847, 490399, 820573, 1177021, 1355809, 1772981, 2278913, 2980117, 3292679, 5534503, 5744011, 8239147, 15301273, 20009357, 23048753, 38741521, 107108911, 140065499, 260121641, 1820851487]

約数ペア:

[(1, 1820851487), (7, 260121641), (13, 140065499), (17, 107108911), (47, 38741521), (79, 23048753), (91, 20009357), (119, 15301273), (221, 8239147), (317, 5744011), (329, 5534503), (553, 3292679), (611, 2980117), (799, 2278913), (1027, 1772981), (1343, 1355809), (1547, 1177021), (2219, 820573), (3713, 490399), (4121, 441847), (4277, 425731), (5389, 337883), (5593, 325559), (7189, 253283), (9401, 193687), (10387, 175301), (14899, 122213), (17459, 104293), (25043, 72709), (25991, 70057), (28847, 63121), (37723, 48269)]