21753585

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1303}}^1$

素因数の和:1374

約数の個数: 48

約数和(自身を含む): 43939584

約数和(自身を除く): 22185999

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 53, 63, 105, 159, 265, 315, 371, 477, 795, 1113, 1303, 1855, 2385, 3339, 3909, 5565, 6515, 9121, 11727, 16695, 19545, 27363, 45605, 58635, 69059, 82089, 136815, 207177, 345295, 410445, 483413, 621531, 1035885, 1450239, 2417065, 3107655, 4350717, 7251195, 21753585]

約数ペア:

[(1, 21753585), (3, 7251195), (5, 4350717), (7, 3107655), (9, 2417065), (15, 1450239), (21, 1035885), (35, 621531), (45, 483413), (53, 410445), (63, 345295), (105, 207177), (159, 136815), (265, 82089), (315, 69059), (371, 58635), (477, 45605), (795, 27363), (1113, 19545), (1303, 16695), (1855, 11727), (2385, 9121), (3339, 6515), (3909, 5565)]