21268476

素因数分解:

$2^2\times 3^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 55901664

約数和(自身を除く): 34633188

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 71, 106, 142, 157, 159, 212, 213, 284, 314, 318, 426, 471, 477, 628, 636, 639, 852, 942, 954, 1278, 1413, 1884, 1908, 2556, 2826, 3763, 5652, 7526, 8321, 11147, 11289, 15052, 16642, 22294, 22578, 24963, 33284, 33441, 33867, 44588, 45156, 49926, 66882, 67734, 74889, 99852, 100323, 133764, 135468, 149778, 200646, 299556, 401292, 590791, 1181582, 1772373, 2363164, 3544746, 5317119, 7089492, 10634238, 21268476]

約数ペア:

[(1, 21268476), (2, 10634238), (3, 7089492), (4, 5317119), (6, 3544746), (9, 2363164), (12, 1772373), (18, 1181582), (36, 590791), (53, 401292), (71, 299556), (106, 200646), (142, 149778), (157, 135468), (159, 133764), (212, 100323), (213, 99852), (284, 74889), (314, 67734), (318, 66882), (426, 49926), (471, 45156), (477, 44588), (628, 33867), (636, 33441), (639, 33284), (852, 24963), (942, 22578), (954, 22294), (1278, 16642), (1413, 15052), (1884, 11289), (1908, 11147), (2556, 8321), (2826, 7526), (3763, 5652)]