20007988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:317

約数の個数: 96

約数和(自身を含む): 49674240

約数和(自身を除く): 29666252

約数列:

[1, 2, 4, 7, 11, 13, 14, 19, 22, 26, 28, 38, 44, 52, 76, 77, 91, 133, 143, 154, 182, 209, 247, 263, 266, 286, 308, 364, 418, 494, 526, 532, 572, 836, 988, 1001, 1052, 1463, 1729, 1841, 2002, 2717, 2893, 2926, 3419, 3458, 3682, 4004, 4997, 5434, 5786, 5852, 6838, 6916, 7364, 9994, 10868, 11572, 13676, 19019, 19988, 20251, 23933, 34979, 37609, 38038, 40502, 47866, 54967, 64961, 69958, 75218, 76076, 81004, 95732, 109934, 129922, 139916, 150436, 219868, 259844, 263263, 384769, 454727, 526526, 714571, 769538, 909454, 1053052, 1429142, 1539076, 1818908, 2858284, 5001997, 10003994, 20007988]

約数ペア:

[(1, 20007988), (2, 10003994), (4, 5001997), (7, 2858284), (11, 1818908), (13, 1539076), (14, 1429142), (19, 1053052), (22, 909454), (26, 769538), (28, 714571), (38, 526526), (44, 454727), (52, 384769), (76, 263263), (77, 259844), (91, 219868), (133, 150436), (143, 139916), (154, 129922), (182, 109934), (209, 95732), (247, 81004), (263, 76076), (266, 75218), (286, 69958), (308, 64961), (364, 54967), (418, 47866), (494, 40502), (526, 38038), (532, 37609), (572, 34979), (836, 23933), (988, 20251), (1001, 19988), (1052, 19019), (1463, 13676), (1729, 11572), (1841, 10868), (2002, 9994), (2717, 7364), (2893, 6916), (2926, 6838), (3419, 5852), (3458, 5786), (3682, 5434), (4004, 4997)]