19880464

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{607}}^1$

素因数の和:727

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 20831216

約数列:

[1, 2, 4, 8, 16, 23, 46, 89, 92, 178, 184, 356, 368, 607, 712, 1214, 1424, 2047, 2428, 4094, 4856, 8188, 9712, 13961, 16376, 27922, 32752, 54023, 55844, 108046, 111688, 216092, 223376, 432184, 864368, 1242529, 2485058, 4970116, 9940232, 19880464]

約数ペア:

[(1, 19880464), (2, 9940232), (4, 4970116), (8, 2485058), (16, 1242529), (23, 864368), (46, 432184), (89, 223376), (92, 216092), (178, 111688), (184, 108046), (356, 55844), (368, 54023), (607, 32752), (712, 27922), (1214, 16376), (1424, 13961), (2047, 9712), (2428, 8188), (4094, 4856)]