21548751

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 34406400

約数和(自身を除く): 12857649

約数列:

[1, 3, 7, 21, 31, 79, 93, 217, 237, 419, 553, 651, 1257, 1659, 2449, 2933, 7347, 8799, 12989, 17143, 33101, 38967, 51429, 90923, 99303, 231707, 272769, 695121, 1026131, 3078393, 7182917, 21548751]

約数ペア:

[(1, 21548751), (3, 7182917), (7, 3078393), (21, 1026131), (31, 695121), (79, 272769), (93, 231707), (217, 99303), (237, 90923), (419, 51429), (553, 38967), (651, 33101), (1257, 17143), (1659, 12989), (2449, 8799), (2933, 7347)]