21390156

素因数分解:

$2^2\times 3^4\times {\mathrm{107}}^1\times {\mathrm{617}}^1$

素因数の和:740

約数の個数: 60

約数和(自身を含む): 56532168

約数和(自身を除く): 35142012

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 107, 108, 162, 214, 321, 324, 428, 617, 642, 963, 1234, 1284, 1851, 1926, 2468, 2889, 3702, 3852, 5553, 5778, 7404, 8667, 11106, 11556, 16659, 17334, 22212, 33318, 34668, 49977, 66019, 66636, 99954, 132038, 198057, 199908, 264076, 396114, 594171, 792228, 1188342, 1782513, 2376684, 3565026, 5347539, 7130052, 10695078, 21390156]

約数ペア:

[(1, 21390156), (2, 10695078), (3, 7130052), (4, 5347539), (6, 3565026), (9, 2376684), (12, 1782513), (18, 1188342), (27, 792228), (36, 594171), (54, 396114), (81, 264076), (107, 199908), (108, 198057), (162, 132038), (214, 99954), (321, 66636), (324, 66019), (428, 49977), (617, 34668), (642, 33318), (963, 22212), (1234, 17334), (1284, 16659), (1851, 11556), (1926, 11106), (2468, 8667), (2889, 7404), (3702, 5778), (3852, 5553)]