21604737

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 37822464

約数和(自身を除く): 16217727

約数列:

[1, 3, 7, 11, 21, 31, 33, 49, 77, 93, 147, 217, 231, 341, 431, 539, 651, 1023, 1293, 1519, 1617, 2387, 3017, 4557, 4741, 7161, 9051, 13361, 14223, 16709, 21119, 33187, 40083, 50127, 63357, 93527, 99561, 146971, 232309, 280581, 440913, 654689, 696927, 1028797, 1964067, 3086391, 7201579, 21604737]

約数ペア:

[(1, 21604737), (3, 7201579), (7, 3086391), (11, 1964067), (21, 1028797), (31, 696927), (33, 654689), (49, 440913), (77, 280581), (93, 232309), (147, 146971), (217, 99561), (231, 93527), (341, 63357), (431, 50127), (539, 40083), (651, 33187), (1023, 21119), (1293, 16709), (1519, 14223), (1617, 13361), (2387, 9051), (3017, 7161), (4557, 4741)]