81310551

素因数分解:

$3^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{2549}}^1$

素因数の和:2604

約数の個数: 32

約数和(自身を含む): 130560000

約数和(自身を除く): 49249449

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 343, 651, 1029, 1519, 2549, 4557, 7647, 10633, 17843, 31899, 53529, 79019, 124901, 237057, 374703, 553133, 874307, 1659399, 2622921, 3871931, 11615793, 27103517, 81310551]

約数ペア:

[(1, 81310551), (3, 27103517), (7, 11615793), (21, 3871931), (31, 2622921), (49, 1659399), (93, 874307), (147, 553133), (217, 374703), (343, 237057), (651, 124901), (1029, 79019), (1519, 53529), (2549, 31899), (4557, 17843), (7647, 10633)]