20157618481

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{101}}^1\times {\mathrm{313}}^1$

素因数の和:472

約数の個数: 96

約数和(自身を含む): 28133395200

約数和(自身を除く): 7975776719

約数列:

[1, 7, 11, 13, 49, 77, 91, 101, 143, 169, 313, 343, 539, 637, 707, 1001, 1111, 1183, 1313, 1859, 2191, 3443, 3773, 4069, 4459, 4949, 7007, 7777, 8281, 9191, 13013, 14443, 15337, 17069, 24101, 28483, 31613, 34643, 44759, 49049, 52897, 54439, 57967, 64337, 91091, 101101, 107359, 119483, 168707, 187759, 199381, 221291, 313313, 347743, 370279, 381073, 410969, 450359, 581867, 637637, 707707, 836381, 1180949, 1314313, 1395667, 1549037, 2193191, 2434201, 2591953, 2876783, 4073069, 4520659, 4953949, 5342597, 5854667, 9200191, 10843259, 15352337, 17039407, 18143671, 20137481, 28511483, 31644613, 37398179, 58768567, 64401337, 119275849, 140962367, 199580381, 221512291, 261787253, 411379969, 1550586037, 1832510771, 2879659783, 20157618481]

約数ペア:

[(1, 20157618481), (7, 2879659783), (11, 1832510771), (13, 1550586037), (49, 411379969), (77, 261787253), (91, 221512291), (101, 199580381), (143, 140962367), (169, 119275849), (313, 64401337), (343, 58768567), (539, 37398179), (637, 31644613), (707, 28511483), (1001, 20137481), (1111, 18143671), (1183, 17039407), (1313, 15352337), (1859, 10843259), (2191, 9200191), (3443, 5854667), (3773, 5342597), (4069, 4953949), (4459, 4520659), (4949, 4073069), (7007, 2876783), (7777, 2591953), (8281, 2434201), (9191, 2193191), (13013, 1549037), (14443, 1395667), (15337, 1314313), (17069, 1180949), (24101, 836381), (28483, 707707), (31613, 637637), (34643, 581867), (44759, 450359), (49049, 410969), (52897, 381073), (54439, 370279), (57967, 347743), (64337, 313313), (91091, 221291), (101101, 199381), (107359, 187759), (119483, 168707)]