2123121

素因数分解:

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

素因数の和:142

約数の個数: 48

約数和(自身を含む): 3907008

約数和(自身を除く): 1783887

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 49, 77, 91, 101, 143, 147, 231, 273, 303, 429, 539, 637, 707, 1001, 1111, 1313, 1617, 1911, 2121, 3003, 3333, 3939, 4949, 7007, 7777, 9191, 14443, 14847, 21021, 23331, 27573, 43329, 54439, 64337, 101101, 163317, 193011, 303303, 707707, 2123121]

約数ペア:

[(1, 2123121), (3, 707707), (7, 303303), (11, 193011), (13, 163317), (21, 101101), (33, 64337), (39, 54439), (49, 43329), (77, 27573), (91, 23331), (101, 21021), (143, 14847), (147, 14443), (231, 9191), (273, 7777), (303, 7007), (429, 4949), (539, 3939), (637, 3333), (707, 3003), (1001, 2121), (1111, 1911), (1313, 1617)]