21240177

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 35020800

約数和(自身を除く): 13780623

約数列:

[1, 3, 7, 21, 31, 49, 59, 79, 93, 147, 177, 217, 237, 413, 553, 651, 1239, 1519, 1659, 1829, 2449, 2891, 3871, 4557, 4661, 5487, 7347, 8673, 11613, 12803, 13983, 17143, 32627, 38409, 51429, 89621, 97881, 120001, 144491, 228389, 268863, 360003, 433473, 685167, 1011437, 3034311, 7080059, 21240177]

約数ペア:

[(1, 21240177), (3, 7080059), (7, 3034311), (21, 1011437), (31, 685167), (49, 433473), (59, 360003), (79, 268863), (93, 228389), (147, 144491), (177, 120001), (217, 97881), (237, 89621), (413, 51429), (553, 38409), (651, 32627), (1239, 17143), (1519, 13983), (1659, 12803), (1829, 11613), (2449, 8673), (2891, 7347), (3871, 5487), (4557, 4661)]