208020813

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1307}}^1$

素因数の和:1394

約数の個数: 64

約数和(自身を含む): 379717632

約数和(自身を除く): 171696819

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 53, 77, 91, 143, 159, 231, 273, 371, 429, 583, 689, 1001, 1113, 1307, 1749, 2067, 3003, 3921, 4081, 4823, 7579, 9149, 12243, 14377, 14469, 16991, 22737, 27447, 43131, 50973, 53053, 69271, 100639, 118937, 159159, 186901, 207813, 301917, 356811, 484897, 560703, 761981, 900523, 1308307, 1454691, 2285943, 2701569, 3924921, 5333867, 6303661, 9905753, 16001601, 18910983, 29717259, 69340271, 208020813]

約数ペア:

[(1, 208020813), (3, 69340271), (7, 29717259), (11, 18910983), (13, 16001601), (21, 9905753), (33, 6303661), (39, 5333867), (53, 3924921), (77, 2701569), (91, 2285943), (143, 1454691), (159, 1308307), (231, 900523), (273, 761981), (371, 560703), (429, 484897), (583, 356811), (689, 301917), (1001, 207813), (1113, 186901), (1307, 159159), (1749, 118937), (2067, 100639), (3003, 69271), (3921, 53053), (4081, 50973), (4823, 43131), (7579, 27447), (9149, 22737), (12243, 16991), (14377, 14469)]