21625401

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{653}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 35159040

約数和(自身を除く): 13533639

約数列:

[1, 3, 7, 19, 21, 57, 83, 133, 249, 399, 581, 653, 1577, 1743, 1959, 4571, 4731, 11039, 12407, 13713, 33117, 37221, 54199, 86849, 162597, 260547, 379393, 1029781, 1138179, 3089343, 7208467, 21625401]

約数ペア:

[(1, 21625401), (3, 7208467), (7, 3089343), (19, 1138179), (21, 1029781), (57, 379393), (83, 260547), (133, 162597), (249, 86849), (399, 54199), (581, 37221), (653, 33117), (1577, 13713), (1743, 12407), (1959, 11039), (4571, 4731)]