21541784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{4013}}^1$

素因数の和:4091

約数の個数: 32

約数和(自身を含む): 44796240

約数和(自身を除く): 23254456

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 88, 122, 244, 488, 671, 1342, 2684, 4013, 5368, 8026, 16052, 32104, 44143, 88286, 176572, 244793, 353144, 489586, 979172, 1958344, 2692723, 5385446, 10770892, 21541784]

約数ペア:

[(1, 21541784), (2, 10770892), (4, 5385446), (8, 2692723), (11, 1958344), (22, 979172), (44, 489586), (61, 353144), (88, 244793), (122, 176572), (244, 88286), (488, 44143), (671, 32104), (1342, 16052), (2684, 8026), (4013, 5368)]