21005586

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3877}}^1$

素因数の和:3935

約数の個数: 48

約数和(自身を含む): 53237184

約数和(自身を除く): 32231598

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 63, 86, 126, 129, 258, 301, 387, 602, 774, 903, 1806, 2709, 3877, 5418, 7754, 11631, 23262, 27139, 34893, 54278, 69786, 81417, 162834, 166711, 244251, 333422, 488502, 500133, 1000266, 1166977, 1500399, 2333954, 3000798, 3500931, 7001862, 10502793, 21005586]

約数ペア:

[(1, 21005586), (2, 10502793), (3, 7001862), (6, 3500931), (7, 3000798), (9, 2333954), (14, 1500399), (18, 1166977), (21, 1000266), (42, 500133), (43, 488502), (63, 333422), (86, 244251), (126, 166711), (129, 162834), (258, 81417), (301, 69786), (387, 54278), (602, 34893), (774, 27139), (903, 23262), (1806, 11631), (2709, 7754), (3877, 5418)]