21519363

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 31334400

約数和(自身を除く): 9815037

約数列:

[1, 3, 29, 31, 79, 87, 93, 101, 237, 303, 899, 2291, 2449, 2697, 2929, 3131, 6873, 7347, 7979, 8787, 9393, 23937, 71021, 90799, 213063, 231391, 247349, 272397, 694173, 742047, 7173121, 21519363]

約数ペア:

[(1, 21519363), (3, 7173121), (29, 742047), (31, 694173), (79, 272397), (87, 247349), (93, 231391), (101, 213063), (237, 90799), (303, 71021), (899, 23937), (2291, 9393), (2449, 8787), (2697, 7979), (2929, 7347), (3131, 6873)]