28056028

素因数分解:

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

素因数の和:73

約数の個数: 108

約数和(自身を含む): 68149200

約数和(自身を除く): 40093172

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 49, 52, 77, 91, 98, 121, 143, 154, 169, 182, 196, 242, 286, 308, 338, 343, 364, 484, 539, 572, 637, 676, 686, 847, 1001, 1078, 1183, 1274, 1372, 1573, 1694, 1859, 2002, 2156, 2366, 2548, 3146, 3388, 3718, 3773, 4004, 4459, 4732, 5929, 6292, 7007, 7436, 7546, 8281, 8918, 11011, 11858, 13013, 14014, 15092, 16562, 17836, 20449, 22022, 23716, 26026, 28028, 33124, 40898, 41503, 44044, 49049, 52052, 57967, 77077, 81796, 83006, 91091, 98098, 115934, 143143, 154154, 166012, 182182, 196196, 231868, 286286, 308308, 364364, 539539, 572572, 637637, 1002001, 1079078, 1275274, 2004002, 2158156, 2550548, 4008004, 7014007, 14028014, 28056028]

約数ペア:

[(1, 28056028), (2, 14028014), (4, 7014007), (7, 4008004), (11, 2550548), (13, 2158156), (14, 2004002), (22, 1275274), (26, 1079078), (28, 1002001), (44, 637637), (49, 572572), (52, 539539), (77, 364364), (91, 308308), (98, 286286), (121, 231868), (143, 196196), (154, 182182), (169, 166012), (182, 154154), (196, 143143), (242, 115934), (286, 98098), (308, 91091), (338, 83006), (343, 81796), (364, 77077), (484, 57967), (539, 52052), (572, 49049), (637, 44044), (676, 41503), (686, 40898), (847, 33124), (1001, 28028), (1078, 26026), (1183, 23716), (1274, 22022), (1372, 20449), (1573, 17836), (1694, 16562), (1859, 15092), (2002, 14014), (2156, 13013), (2366, 11858), (2548, 11011), (3146, 8918), (3388, 8281), (3718, 7546), (3773, 7436), (4004, 7007), (4459, 6292), (4732, 5929)]