21751275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3187}}^1$

素因数の和:3220

約数の個数: 48

約数和(自身を含む): 44274944

約数和(自身を除く): 22523669

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 105, 175, 195, 273, 325, 455, 525, 975, 1365, 2275, 3187, 6825, 9561, 15935, 22309, 41431, 47805, 66927, 79675, 111545, 124293, 207155, 239025, 290017, 334635, 557725, 621465, 870051, 1035775, 1450085, 1673175, 3107325, 4350255, 7250425, 21751275]

約数ペア:

[(1, 21751275), (3, 7250425), (5, 4350255), (7, 3107325), (13, 1673175), (15, 1450085), (21, 1035775), (25, 870051), (35, 621465), (39, 557725), (65, 334635), (75, 290017), (91, 239025), (105, 207155), (175, 124293), (195, 111545), (273, 79675), (325, 66927), (455, 47805), (525, 41431), (975, 22309), (1365, 15935), (2275, 9561), (3187, 6825)]