21000296954

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{70229}}^1$

素因数の和:70335

約数の個数: 64

約数和(自身を含む): 40776099840

約数和(自身を除く): 19775802886

約数列:

[1, 2, 7, 13, 14, 26, 31, 53, 62, 91, 106, 182, 217, 371, 403, 434, 689, 742, 806, 1378, 1643, 2821, 3286, 4823, 5642, 9646, 11501, 21359, 23002, 42718, 70229, 140458, 149513, 299026, 491603, 912977, 983206, 1825954, 2177099, 3722137, 4354198, 6390839, 7444274, 12781678, 15239693, 26054959, 28302287, 30479386, 48387781, 52109918, 56604574, 96775562, 115386247, 198116009, 230772494, 338714467, 396232018, 677428934, 807703729, 1500021211, 1615407458, 3000042422, 10500148477, 21000296954]

約数ペア:

[(1, 21000296954), (2, 10500148477), (7, 3000042422), (13, 1615407458), (14, 1500021211), (26, 807703729), (31, 677428934), (53, 396232018), (62, 338714467), (91, 230772494), (106, 198116009), (182, 115386247), (217, 96775562), (371, 56604574), (403, 52109918), (434, 48387781), (689, 30479386), (742, 28302287), (806, 26054959), (1378, 15239693), (1643, 12781678), (2821, 7444274), (3286, 6390839), (4823, 4354198), (5642, 3722137), (9646, 2177099), (11501, 1825954), (21359, 983206), (23002, 912977), (42718, 491603), (70229, 299026), (140458, 149513)]