19853853

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:229

約数の個数: 32

約数和(自身を含む): 28926720

約数和(自身を除く): 9072867

約数列:

[1, 3, 23, 53, 61, 69, 89, 159, 183, 267, 1219, 1403, 2047, 3233, 3657, 4209, 4717, 5429, 6141, 9699, 14151, 16287, 74359, 108491, 124867, 223077, 287737, 325473, 374601, 863211, 6617951, 19853853]

約数ペア:

[(1, 19853853), (3, 6617951), (23, 863211), (53, 374601), (61, 325473), (69, 287737), (89, 223077), (159, 124867), (183, 108491), (267, 74359), (1219, 16287), (1403, 14151), (2047, 9699), (3233, 6141), (3657, 5429), (4209, 4717)]