21469929

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 34152192

約数和(自身を除く): 12682263

約数列:

[1, 3, 13, 17, 39, 47, 51, 53, 141, 159, 169, 221, 507, 611, 663, 689, 799, 901, 1833, 2067, 2397, 2491, 2703, 2873, 7473, 7943, 8619, 8957, 10387, 11713, 23829, 26871, 31161, 32383, 35139, 42347, 97149, 127041, 135031, 152269, 405093, 420979, 456807, 550511, 1262937, 1651533, 7156643, 21469929]

約数ペア:

[(1, 21469929), (3, 7156643), (13, 1651533), (17, 1262937), (39, 550511), (47, 456807), (51, 420979), (53, 405093), (141, 152269), (159, 135031), (169, 127041), (221, 97149), (507, 42347), (611, 35139), (663, 32383), (689, 31161), (799, 26871), (901, 23829), (1833, 11713), (2067, 10387), (2397, 8957), (2491, 8619), (2703, 7943), (2873, 7473)]