21408453

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 35582976

約数和(自身を除く): 14174523

約数列:

[1, 3, 9, 11, 33, 43, 47, 99, 107, 129, 141, 321, 387, 423, 473, 517, 963, 1177, 1419, 1551, 2021, 3531, 4257, 4601, 4653, 5029, 6063, 10593, 13803, 15087, 18189, 22231, 41409, 45261, 50611, 55319, 66693, 151833, 165957, 200079, 216247, 455499, 497871, 648741, 1946223, 2378717, 7136151, 21408453]

約数ペア:

[(1, 21408453), (3, 7136151), (9, 2378717), (11, 1946223), (33, 648741), (43, 497871), (47, 455499), (99, 216247), (107, 200079), (129, 165957), (141, 151833), (321, 66693), (387, 55319), (423, 50611), (473, 45261), (517, 41409), (963, 22231), (1177, 18189), (1419, 15087), (1551, 13803), (2021, 10593), (3531, 6063), (4257, 5029), (4601, 4653)]