51356560

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7213}}^1$

素因数の和:7315

約数の個数: 40

約数和(自身を含む): 120762360

約数和(自身を除く): 69405800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 7213, 14426, 28852, 36065, 57704, 72130, 115408, 144260, 288520, 577040, 641957, 1283914, 2567828, 3209785, 5135656, 6419570, 10271312, 12839140, 25678280, 51356560]

約数ペア:

[(1, 51356560), (2, 25678280), (4, 12839140), (5, 10271312), (8, 6419570), (10, 5135656), (16, 3209785), (20, 2567828), (40, 1283914), (80, 641957), (89, 577040), (178, 288520), (356, 144260), (445, 115408), (712, 72130), (890, 57704), (1424, 36065), (1780, 28852), (3560, 14426), (7120, 7213)]