21345075

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{4993}}^1$

素因数の和:5028

約数の個数: 36

約数和(自身を含む): 40251640

約数和(自身を除く): 18906565

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 171, 225, 285, 475, 855, 1425, 4275, 4993, 14979, 24965, 44937, 74895, 94867, 124825, 224685, 284601, 374475, 474335, 853803, 1123425, 1423005, 2371675, 4269015, 7115025, 21345075]

約数ペア:

[(1, 21345075), (3, 7115025), (5, 4269015), (9, 2371675), (15, 1423005), (19, 1123425), (25, 853803), (45, 474335), (57, 374475), (75, 284601), (95, 224685), (171, 124825), (225, 94867), (285, 74895), (475, 44937), (855, 24965), (1425, 14979), (4275, 4993)]