20214285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 20428275

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 59, 65, 91, 105, 177, 195, 251, 273, 295, 413, 455, 753, 767, 885, 1239, 1255, 1365, 1757, 2065, 2301, 3263, 3765, 3835, 5271, 5369, 6195, 8785, 9789, 11505, 14809, 16107, 16315, 22841, 26355, 26845, 44427, 48945, 68523, 74045, 80535, 103663, 114205, 192517, 222135, 310989, 342615, 518315, 577551, 962585, 1347619, 1554945, 2887755, 4042857, 6738095, 20214285]

約数ペア:

[(1, 20214285), (3, 6738095), (5, 4042857), (7, 2887755), (13, 1554945), (15, 1347619), (21, 962585), (35, 577551), (39, 518315), (59, 342615), (65, 310989), (91, 222135), (105, 192517), (177, 114205), (195, 103663), (251, 80535), (273, 74045), (295, 68523), (413, 48945), (455, 44427), (753, 26845), (767, 26355), (885, 22841), (1239, 16315), (1255, 16107), (1365, 14809), (1757, 11505), (2065, 9789), (2301, 8785), (3263, 6195), (3765, 5369), (3835, 5271)]