68921840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{66271}}^1$

素因数の和:66297

約数の個数: 40

約数和(自身を含む): 172572288

約数和(自身を除く): 103650448

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 66271, 132542, 265084, 331355, 530168, 662710, 861523, 1060336, 1325420, 1723046, 2650840, 3446092, 4307615, 5301680, 6892184, 8615230, 13784368, 17230460, 34460920, 68921840]

約数ペア:

[(1, 68921840), (2, 34460920), (4, 17230460), (5, 13784368), (8, 8615230), (10, 6892184), (13, 5301680), (16, 4307615), (20, 3446092), (26, 2650840), (40, 1723046), (52, 1325420), (65, 1060336), (80, 861523), (104, 662710), (130, 530168), (208, 331355), (260, 265084), (520, 132542), (1040, 66271)]