21640536

素因数分解:

$2^3\times 3^2\times {\mathrm{53}}^2\times {\mathrm{107}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 60294780

約数和(自身を除く): 38654244

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 53, 72, 106, 107, 159, 212, 214, 318, 321, 424, 428, 477, 636, 642, 856, 954, 963, 1272, 1284, 1908, 1926, 2568, 2809, 3816, 3852, 5618, 5671, 7704, 8427, 11236, 11342, 16854, 17013, 22472, 22684, 25281, 33708, 34026, 45368, 50562, 51039, 67416, 68052, 101124, 102078, 136104, 202248, 204156, 300563, 408312, 601126, 901689, 1202252, 1803378, 2404504, 2705067, 3606756, 5410134, 7213512, 10820268, 21640536]

約数ペア:

[(1, 21640536), (2, 10820268), (3, 7213512), (4, 5410134), (6, 3606756), (8, 2705067), (9, 2404504), (12, 1803378), (18, 1202252), (24, 901689), (36, 601126), (53, 408312), (72, 300563), (106, 204156), (107, 202248), (159, 136104), (212, 102078), (214, 101124), (318, 68052), (321, 67416), (424, 51039), (428, 50562), (477, 45368), (636, 34026), (642, 33708), (856, 25281), (954, 22684), (963, 22472), (1272, 17013), (1284, 16854), (1908, 11342), (1926, 11236), (2568, 8427), (2809, 7704), (3816, 5671), (3852, 5618)]