21272020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{727}}^1$

素因数の和:773

約数の個数: 96

約数和(自身を含む): 58705920

約数和(自身を除く): 37433900

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 95, 110, 133, 140, 154, 190, 209, 220, 266, 308, 380, 385, 418, 532, 665, 727, 770, 836, 1045, 1330, 1454, 1463, 1540, 2090, 2660, 2908, 2926, 3635, 4180, 5089, 5852, 7270, 7315, 7997, 10178, 13813, 14540, 14630, 15994, 20356, 25445, 27626, 29260, 31988, 39985, 50890, 55252, 55979, 69065, 79970, 96691, 101780, 111958, 138130, 151943, 159940, 193382, 223916, 276260, 279895, 303886, 386764, 483455, 559790, 607772, 759715, 966910, 1063601, 1119580, 1519430, 1933820, 2127202, 3038860, 4254404, 5318005, 10636010, 21272020]

約数ペア:

[(1, 21272020), (2, 10636010), (4, 5318005), (5, 4254404), (7, 3038860), (10, 2127202), (11, 1933820), (14, 1519430), (19, 1119580), (20, 1063601), (22, 966910), (28, 759715), (35, 607772), (38, 559790), (44, 483455), (55, 386764), (70, 303886), (76, 279895), (77, 276260), (95, 223916), (110, 193382), (133, 159940), (140, 151943), (154, 138130), (190, 111958), (209, 101780), (220, 96691), (266, 79970), (308, 69065), (380, 55979), (385, 55252), (418, 50890), (532, 39985), (665, 31988), (727, 29260), (770, 27626), (836, 25445), (1045, 20356), (1330, 15994), (1454, 14630), (1463, 14540), (1540, 13813), (2090, 10178), (2660, 7997), (2908, 7315), (2926, 7270), (3635, 5852), (4180, 5089)]