21399972

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{727}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 54792192

約数和(自身を除く): 33392220

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 223, 446, 669, 727, 892, 1338, 1454, 2181, 2453, 2676, 2908, 4362, 4906, 7359, 7997, 8724, 9812, 14718, 15994, 23991, 29436, 31988, 47982, 95964, 162121, 324242, 486363, 648484, 972726, 1783331, 1945452, 3566662, 5349993, 7133324, 10699986, 21399972]

約数ペア:

[(1, 21399972), (2, 10699986), (3, 7133324), (4, 5349993), (6, 3566662), (11, 1945452), (12, 1783331), (22, 972726), (33, 648484), (44, 486363), (66, 324242), (132, 162121), (223, 95964), (446, 47982), (669, 31988), (727, 29436), (892, 23991), (1338, 15994), (1454, 14718), (2181, 9812), (2453, 8724), (2676, 7997), (2908, 7359), (4362, 4906)]