20284628

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1$

素因数の和:469

約数の個数: 72

約数和(自身を含む): 46922400

約数和(自身を除く): 26637772

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 49, 52, 76, 91, 98, 133, 182, 196, 247, 266, 364, 419, 494, 532, 637, 838, 931, 988, 1274, 1676, 1729, 1862, 2548, 2933, 3458, 3724, 5447, 5866, 6916, 7961, 10894, 11732, 12103, 15922, 20531, 21788, 24206, 31844, 38129, 41062, 48412, 55727, 76258, 82124, 103493, 111454, 152516, 206986, 222908, 266903, 390089, 413972, 533806, 724451, 780178, 1067612, 1448902, 1560356, 2897804, 5071157, 10142314, 20284628]

約数ペア:

[(1, 20284628), (2, 10142314), (4, 5071157), (7, 2897804), (13, 1560356), (14, 1448902), (19, 1067612), (26, 780178), (28, 724451), (38, 533806), (49, 413972), (52, 390089), (76, 266903), (91, 222908), (98, 206986), (133, 152516), (182, 111454), (196, 103493), (247, 82124), (266, 76258), (364, 55727), (419, 48412), (494, 41062), (532, 38129), (637, 31844), (838, 24206), (931, 21788), (988, 20531), (1274, 15922), (1676, 12103), (1729, 11732), (1862, 10894), (2548, 7961), (2933, 6916), (3458, 5866), (3724, 5447)]